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BMW9700
22-08-2009, 10:13 PM
some information on the new grade of petrol RON95..most modern cars can run on this grade of fuel..RON97 will cost more from sept


http://thestar.com.my/news/story.asp?file=/2009/5/14/nation/3903478&sec=nation

VeeJay
22-08-2009, 10:31 PM
One could use a lower grade as well. All you need to do is, to re-tune your engine.

I have been using RON92, on my wira, without a problem.

BMW9700
22-08-2009, 10:52 PM
One could use a lower grade as well. All you need to do is, to re-tune your engine.

I have been using RON92, on my wira, without a problem.


i drive a bmw and also have an x trail and have used the RON92 with no problems..all cars with an ecu will adjust to the fuel..its only the older (or rather very old cars from he 70's) which need a manual retune..no point spending the extra for RON97..

also heard that the diesel quality will be to EURO2 standard from sept this year..now diesel cars will be a good alternative..

the mercedes W211 E270cdi and bmw 530d will be running better and with less problems compared to the previous grade of local diesel..these cars are very high performance vehicles..they have tremendous torque and initial pick up and have been unpopular due to the fuel quality..these cars used are selling very cheap compared to their petrol counterparts due to the earlier fuel as they caused problems with the turbos and injectors..now would be a good time to consider a used merc or bmw diesel...they are bit noisy on the outside with the usual clatter but the driving pleasure derived from these models are really worth it...before buying pls check that the necessary checks and parts replacements have been done as damaged by the previous fuel..

i might consider a 530d 04/05 model now a the govt introduces the better grade of diesels...

the 530d is a real cruiser and has tremendous acceleration at all ranges..the car looks mighty good and comfortable and there are some units selling for around 150k for the bmw and around 135k for the mercedes E270cdi...

really workhorses with the power

regards

bslee
22-08-2009, 11:39 PM
i drive a bmw and also have an x trail and have used the RON92 with no problems..all cars with an ecu will adjust to the fuel..its only the older (or rather very old cars from he 70's) which need a manual retune..no point spending the extra for RON97..


That is because you drive a car with advanced Electronic Fuel Injection (motronic or better) that doesn't allow ignition timing adjustments to compensate fuel octane rating. Its all pre-programmed and ECU controlled. NO adjustments unless a serious remapping of its algorithms, but may be with other side effects.
The EFI is likely tuned to adapt to lowest RON 92. If it happens you're using RON97 all the time, you just had more efficiency on tap. So when backing down to RON95, there's negligible difference.
In older cars, the trick was to back down the ignition timing so that the engine doesn't knock when using lower octane or inferior fuel. Anyway most EFI engines are not to be tweaked for fuel optimization via ignition timing. Its a thing of the past.

BMW9700
23-08-2009, 12:01 AM
correct correct correct!...the older cars you had to advance or retard the ignition timing by means of the distributor...now its all done via the ecu...

AaronOng
23-08-2009, 12:59 AM
Wahhhh...beemer is fan of Lingam! :) :D

shthang
23-08-2009, 10:03 AM
That is because you drive a car with advanced Electronic Fuel Injection (motronic or better) that doesn't allow ignition timing adjustments to compensate fuel octane rating. Its all pre-programmed and ECU controlled. NO adjustments unless a serious remapping of its algorithms, but may be with other side effects.
The EFI is likely tuned to adapt to lowest RON 92. If it happens you're using RON97 all the time, you just had more efficiency on tap. So when backing down to RON95, there's negligible difference.
In older cars, the trick was to back down the ignition timing so that the engine doesn't knock when using lower octane or inferior fuel. Anyway most EFI engines are not to be tweaked for fuel optimization via ignition timing. Its a thing of the past.

BS, you are really a sifu in engineering subjects! You are right that there is hardly any performance difference between RON97 and RON95. In my view, i think >90% cars are ok to run on 97. The govt wud hv introduced 92 fuel to save subsidies if Proton cars hv no problem.

mick123
23-08-2009, 10:41 AM
yesterday i pumped RON95 into my '02 sentra without any retuning. didn't notice any difference. still can zoom zoom pass many cars :D:D

bslee
23-08-2009, 01:30 PM
If one looks at the engine specs closely, many cars are now with higher engine compression ratio (go google for further info), up to 10:1 especially found in smaller cars, one factor to increase brake horse power (bhp) and must use highest octane rating to prevent engine knocking or misfire. Turbo cars are usually with lowest compression ratio (< 8:1) since the turbo kicks in and gives all the boost for power on tap. Its all part of a balancing act. Anyway, EFI is already designed to balance up things on a available fuels in various countries it was intended for. Thats why a EFI algorithm for a given car may vary or similar depending on the export destination.

klutch
23-08-2009, 08:02 PM
Quick Question: Can I use RON95 for my Iswara 1.5 [Auto] REG Year - 2000? It does say RON97 on the fuel cap, though.

BMW9700
23-08-2009, 08:24 PM
Quick Question: Can I use RON95 for my Iswara 1.5 [Auto] REG Year - 2000? It does say RON97 on the fuel cap, though.


think iswara 1.5 is fuel injection & ECU controlled correct me if wrong ...so should be able to use...please check with the EON service centre first for confirmation...


regards

bslee
23-08-2009, 11:08 PM
Should be ok lah. It would be of concern if using RON92. RON92 was an equalvalent of Regular fuel, and RON97/98 is Super.

Sentinel
23-08-2009, 11:09 PM
No problem lah, my old 1998 BMW 740iL (The Ultimate Driving Experience) is already running RON95... saves me RM15 every full-tank... :D

VeeJay
23-08-2009, 11:33 PM
Even if its RON 92, I dont think, its going to cause a problem, speaking from experience.

The will be a tiny bit of power loss, but I have not heard from a professional mechanic it will harm your car. All it takes is to re-tune.

I have used as low as RON82 ( in US), but did not encounter any problem.

bslee
23-08-2009, 11:40 PM
Even if its RON 92, I dont think, its going to cause a problem, speaking from experience.
The will be a tiny bit of power loss, but I have not heard from a professional mechanic it will harm your car. All it takes is to re-tune.
I have used as low as RON82 ( in US), but did not encounter any problem.

Tiny?.. RON97/98 to RON92 is a significant difference bro!.
I even felt it when changing to n from from Shell to Petronas eventhough same RON rating or price per litre. I didn't believe, but the diff was very apparent. I've stuck to Petronas eversince for my clunker.

klutch
24-08-2009, 12:11 AM
think iswara 1.5 is fuel injection & ECU controlled correct me if wrong ...so should be able to use...please check with the EON service centre first for confirmation...


regards

Iswara is a CARB... anyways, thanks for the answer guys. :D

Phres
24-08-2009, 09:11 AM
http://thestar.com.my/news/story.asp?file=/2009/8/24/nation/4577442&sec=nation

anyone tried this petrol before?

Firefly
24-08-2009, 09:49 AM
RON97 is currently RM1.80, How much was the Regular RON92?

chewie
24-08-2009, 10:10 AM
ron92 = RM1.70 (doing to phase out)
ron95 = RM1.75
ron97 = RM2.00 (starting 1/9/09)

Sentinel
24-08-2009, 10:42 AM
Suitability of RON95 for cars are also discussed in Motoring thread... go there!

Raikonen
24-08-2009, 11:25 AM
Last nights Caltex RON97 priced at RM1.80 while RON95 at RM1.75...still pumped RON97

VeeJay
24-08-2009, 11:32 AM
Tiny?.. RON97/98 to RON92 is a significant difference bro!.
I even felt it when changing to n from from Shell to Petronas eventhough same RON rating or price per litre. I didn't believe, but the diff was very apparent. I've stuck to Petronas eversince for my clunker.

Ok OK....might not be tiny! :eek:

But then it depends on the car itself, I presume, again back to tuning.

I only saw (experience) difference on BMW, and Audi.

But when I tried, on Wira, Sentra and Kia, the difference was not much.

Phres
25-08-2009, 08:45 AM
Can Proton Tiara take Ron 95?

shthang
25-08-2009, 09:25 AM
Can Proton Tiara take Ron 95?

Yes it can. Ron95 is ok for all Proton cars. Oil companies will never want to take the risk of introducing 95 if any of Proton car is not suitable.

Sentinel
25-08-2009, 01:11 PM
I also have an old clunker, a 1998 BMW 740iL, which is a 4.4 litre V8 engine with almost 200,000km on the odo. I started using RON95 last month and I don't even feel a slight difference in performance... I am a very sensitive driver and I can feel the slightest difference in a car performance...

klutch
26-08-2009, 04:45 PM
Am using this, just fueled on Tuesday at Petronas. I don't feel any difference on my 1.5A Iswara. BTW; love the price difference though! come SEPT 1.

There is already a thread on this topic: http://www.usj.com.my/bulletin/upload/showthread.php?t=27738

fcloh
26-08-2009, 05:01 PM
I have use ron95 for my bike also.....seems like more power and more vrommmmmmm.......more smooth.....

cetan
26-08-2009, 11:08 PM
Bros, Is ron95 ok for Volvo 940 GL (1995), Merz 280E Master Piece and Toyota Innova??

gary yap
28-08-2009, 06:19 PM
Just saw RON95 at the Shell opposite MPSJ. So far anyone test power?

shthang
28-08-2009, 06:30 PM
tested yesterday. No problem with the car.

Shell announced all 900 stations are now ready with 95 before 1 Sep.

expat1609
28-08-2009, 09:39 PM
Just saw RON95 at the Shell opposite MPSJ. So far anyone test power?

what is the price for the 95?

i know from my european friends, that many are using 95.
even the 98 gives you better mileage, they say the difference in mileage does not compare to the difference in $$$

95 1.113
98 1.264
Diesel 1.015

dont be jealous guys, that are Euros ;)

chin_wan
31-08-2009, 05:58 PM
This thread needs more Johnny Depp....

http://www.nerve.com/CS/blogs/scanner/2008/04/01-07/johnny_depp1_300_400.jpg

KH EE
31-08-2009, 06:30 PM
what???

from http://thestar.com.my/news/story.asp?file=/2009/8/31/nation/20090831175332&sec=nation

RON 95 at RM1.80 per litre from Tuesday, 1/9, and

RON 97 at RM2.05 while RON 92 will be phased out

merdeka???

klutch
31-08-2009, 07:07 PM
This thread needs more Johnny Depp....

http://www.nerve.com/CS/blogs/scanner/2008/04/01-07/johnny_depp1_300_400.jpg

What??? :confused:

pokemon
31-08-2009, 07:08 PM
It is another flip flop from the govt. Where is our RM1.75 RON95? :mad:

Quoted from The Star :

"The RON 95 petrol will be sold at RM1.80 per litre from Tuesday.

RON 97 will be sold at RM2.05 while RON 92 will be phased out, said Domestic Trade, Cooperative and Consumerism Minister Datuk Seri Ismail Sabri Yaakob."


http://www.thestar.com.my/news/story.asp?file=/2009/8/31/nation/20090831175332&sec=nation

klutch
31-08-2009, 07:11 PM
Damn!!! I was looking forward to the new price; good savings since using RON95 but what's new in Bolehland!!? Everytime change...

Sentinel
31-08-2009, 07:11 PM
When the government introduced RON95, it claimed that this grade of petrol will be at RM1.75 per litre, 5 sen less than the current RON97 grade, which will be sold at RM2.00.

Today, on Merdeka Day, the government went back on its own words.

RON95 will be sold at RM1.80, same as RON97 previously.

RON97 will be sold at RM2.05, not RM2.00, as earlier announced.

Looks like the gomen has given the rakyat a black eye on Merdeka Day!

M A L A Y S I A B O L E H ! ! !

klutch
31-08-2009, 07:14 PM
Biasalah!!! 1Malaysia, Rakyat Didahulukan, Pencapaian Diutamakan!!!

bslee
31-08-2009, 07:17 PM
They have control over nearly every essential from rice to petrol, and rakyat ALLOW it to happen!..so..whats the fuss?

Sentinel
31-08-2009, 07:19 PM
Biasalah!!! 1Malaysia, Rakyat Didahulukan, Pencapaian Diutamakan!!!


R A K Y A T
D I D A H U L U K A N ! ! !


Did he say "lets rebuild the bridges and break down the walls"?

Sorry lah, it is all rhetorics!

Sentinel
31-08-2009, 07:26 PM
I wonder what is the real state of the country's treasury?

They can't even wait to increase after Hari Raya, they must be quite desperate! Perhaps to cover the RM12.5 billion PKFZ fiasco... or is it the USD1.1. billion loss by Maybank from the BII deal in Indonesia?

I believe that wholesalers and retailers will start another round of price increases based again on FLIMSY EXCUSES!

And KLCI tomorrow will plummet down!

cml
31-08-2009, 07:29 PM
They need the money to pay for the spin doctors who dream of the one this and one that. To all those who still think that there is hope that the bee end will change for the better, I say dream on.

cml
31-08-2009, 07:34 PM
Actually the more i think about it the more tulan I get. Our spending power gets less and less and we have got these idiotic people telling us that we are better off than the people of Gabon/Timbuktu and they expect us to swallow their rubbish and accuse us of not being patroitic if we protest. This is just too much.

Sentinel
31-08-2009, 07:41 PM
Measure our standard of living....

We now pay RM1.80 for RON97 petrol

Tomorrow we pay RM1.80 too but for RON95 petrol

bslee
31-08-2009, 07:49 PM
Damn!!! I was looking forward to the new price; good savings since using RON95 but what's new in Bolehland!!? Everytime change...

Whats all this 11th hour rambling about?.. you all saw it coming didnt you?

bobkee
31-08-2009, 08:06 PM
Actually the more i think about it the more tulan I get. Our spending power gets less and less and we have got these idiotic people telling us that we are better off than the people of Gabon/Timbuktu and they expect us to swallow their rubbish and accuse us of not being patroitic if we protest. This is just too much.Technically, Gabon is actually doing quite well recording a GDP of US$14,478 per capita compared to our US$14,071 per capita. The country's HDI is also catching up to ours.

So .. I'd really love to have them use Gabon as a comparison.

kuma
31-08-2009, 09:25 PM
I wonder what is the real state of the country's treasury?

They can't even wait to increase after Hari Raya, they must be quite desperate! Perhaps to cover the RM12.5 billion PKFZ fiasco... or is it the USD1.1. billion loss by Maybank from the BII deal in Indonesia?

I believe that wholesalers and retailers will start another round of price increases based again on FLIMSY EXCUSES!

And KLCI tomorrow will plummet down!

Yes, and no fireworks this year, man :( ....
READ: Eh, Why Like That? (http://www.themalaysianinsider.com/index.php/malaysia/36429-eh-why-like-that-this-year)

gtl
31-08-2009, 09:40 PM
they are promising something which they have no control - global fuel prices.
it is futile and stupid.
so it is a flawed policy which they hv no idea what to do!

Sentinel
31-08-2009, 09:42 PM
they are promising something which they have no control - global fuel prices.
it is futile and stupid.
so it is a flawed policy which they hv no idea what to do!
I thought there was a lot of hoo-ha that someone is an economist? Seems he graduated with a degree in economics from Nottingham, no?

wyshin88
31-08-2009, 10:22 PM
Ohh no!!!!! RM2.05???? Crap....MY PErdana V6 can't take Ron95 :mad:

It's stated in the user manual it only takes Ron 97 and above......madness!!!

No increment this year, and have to pay so much more for petrol :( Life is definitely getting tougher!!

PUI!!!! RAKYAT DIDAHULUKAN!!!! PUI PUI PUI!!! Every time I hear this on the radio I will pui!!!!!

Sentinel
31-08-2009, 10:33 PM
Ohh no!!!!! RM2.05???? Crap....MY PErdana V6 can't take Ron95 :mad:

It's stated in the user manual it only takes Ron 97 and above......madness!!!

No increment this year, and have to pay so much more for petrol :( Life is definitely getting tougher!!

PUI!!!! RAKYAT DIDAHULUKAN!!!! PUI PUI PUI!!! Every time I hear this on the radio I will pui!!!!!
Let's see... 50 litre tank x RM0.25 = RM12.50 more per tankful. Assuming 6 tanks per month = RM75.00 more per month. You have my sympathy my friend. Same for all Perdana V6 owners.

Now perhaps the gomen can help to minimize the losses suffered by Maybank!

klutch
31-08-2009, 10:40 PM
Whats all this 11th hour rambling about?.. you all saw it coming didnt you?

I figured it would happen maybe in 3 months or so after the change; give us Malaysians a sweet taste before the SALT!!! :(

gtl
31-08-2009, 10:44 PM
I thought there was a lot of hoo-ha that someone is an economist? Seems he graduated with a degree in economics from Nottingham, no?

aiyah, there are many types of graduate. our ministers graduate here and there but no practise ones. all just go around politiking and make it to the top.
when we are in trouble like now, no clue whats is nottingham or nottinghum!!

to be a finance minister of today's govt - pls look at the credentials of all the other successful countries, it is either an economist or a long time banker. not just a economic grad!

klutch
31-08-2009, 10:48 PM
PUI!!!! RAKYAT DIDAHULUKAN!!!! PUI PUI PUI!!! Every time I hear this on the radio I will pui!!!!!

I will second that... :D

Lau_utlang
31-08-2009, 10:49 PM
Did he graduate? He was called back when dad died of lieukemia.

Sentinel
31-08-2009, 10:53 PM
Did he graduate? He was called back when dad died of lieukemia.I said there was a big hoo-ha... I never said he graduated.

ng
01-09-2009, 12:03 AM
I wonder what is the real state of the country's treasury?



It's obvious that the govt needs the money. I better not say too much here.

Else why the many amanah saham schemes coming up in recent months ?

KLCI won't plummet because PNB will prop it up with the money raised from amanah saham.

USJ27Resident
01-09-2009, 12:19 AM
It's obvious that the govt needs the money. I better not say too much here.

Else why the many amanah saham schemes coming up in recent months ?

Thats what I said earlier... :p suddenly all this Amanah Haram... eh.. I mean Saham.. popping up like mushrooms, and suddenly being made available to everybody... kalau dulu - tok sah harap dio dok bagig hok ko rang... :rolleyes:

gtl
01-09-2009, 07:45 AM
Amanah or no amanah, if you worried abt the risk - don't buy.
agree with usj27, why now?

cml
01-09-2009, 08:02 AM
Its a merdeka day gift to all malaysians. Like the minster spins it, by right it should cost 1.87. malaysians arso lucky. Government 'subsidise' them so they dont feel the hardship!! .Thank you Bee End!!

cml
01-09-2009, 08:03 AM
Soli my england not so good cos i did not go to notinham!!

irisbaggins
01-09-2009, 08:07 AM
Whats RON 95 and RON 97? Which one do i use for my car Avanza? Dua-dua boleh ka? So RON 95 is RM1.80 and RON 97 is RM2.00...........Can my car use RON95?

bobkee
01-09-2009, 08:09 AM
Whats RON 95 and RON 97? Which one do i use for my car Avanza? Dua-dua boleh ka? So RON 95 is RM1.80 and RON 97 is RM2.00...........Can my car use RON95?If you use RON 95, your car's engine will sound like it kena ketuk. If you use RON 97, your wallet will be the one kena ketuk.

jimmyay
01-09-2009, 08:32 AM
Look at the bright side....we are Number 1 here


Top Five country with the most affordable BIG MAC

1. Malaysia - USD 1.70
2. Hong Kong - USD 1.71
3. China, People's Republic of - USD 1.83
4. Thailand - USD 1.86
5. Sri Lanka - USD 1.95

http://en.wikipedia.org/wiki/Big_Mac_Index

bobkee
01-09-2009, 08:36 AM
Look at the bright side....we are Number 1 here


Top Five country with the most affordable BIG MAC

1. Malaysia - USD 1.70
2. Hong Kong - USD 1.71
3. China, People's Republic of - USD 1.83
4. Thailand - USD 1.86
5. Sri Lanka - USD 1.95

http://en.wikipedia.org/wiki/Big_Mac_IndexThank God for that ... NOT! :rolleyes:

gary yap
01-09-2009, 08:51 AM
I'm numb from all these promises. Life still goes on... Last nite while in JB pump in RON97 for the last time.

Jokee
01-09-2009, 10:18 AM
Its a merdeka day gift to all malaysians. Like the minster spins it, by right it should cost 1.87. malaysians arso lucky. Government 'subsidise' them so they dont feel the hardship!! .Thank you Bee End!!
I agree. Please remember to show our appreciation to bee end when the election comes.

chewie
01-09-2009, 10:41 AM
Look at the bright side....we are Number 1 here


Top Five country with the most affordable BIG MAC

1. Malaysia - USD 1.70
2. Hong Kong - USD 1.71
3. China, People's Republic of - USD 1.83
4. Thailand - USD 1.86
5. Sri Lanka - USD 1.95

http://en.wikipedia.org/wiki/Big_Mac_Index

but our malaysia Big Mac I believe is the smallest in size...

CCY
01-09-2009, 10:52 AM
Most pumps introduce Ron95 close to or just before 1st Sept. Have anyone really save any or benefited by using cheaper R95 then....?
Heck....I just manage to pump once, of Ron95 , from BHP last week before seeing it available in shell or petronas.

cml
01-09-2009, 10:59 AM
We really have to show our appreciation to bee end for taking us on a ride and we should keep voting them in for treating us like big time suckers. We are eternally grateful to them for the monuments that they have erected so that we can pray to them like the twin towers, klia, PKfz, and so on. We humbly bow to their greatness.

kingtiong
01-09-2009, 11:00 AM
ya, i also interested to know what is the different between RON95 and RON97?

will it bring side effect to the car? or just effect the power of the car?

jimmyay
01-09-2009, 12:10 PM
We really have to show our appreciation to bee end for taking us on a ride and we should keep voting them in for treating us like big time suckers. We are eternally grateful to them for the monuments that they have erected so that we can pray to them like the twin towers, klia, PKfz, and so on. We humbly bow to their greatness.


Cheers to the almighty dear bee end. And cheers to all the sucker out there.

USJ27Resident
02-09-2009, 01:09 AM
Its a merdeka day gift to all malaysians. Like the minster spins it, by right it should cost 1.87. malaysians arso lucky. Government 'subsidise' them so they dont feel the hardship!! .Thank you Bee End!!

when crude was at it highest... it was RM2.70 per liter... now crude is at USD 70+... shouldn't it be RM 1.35+
Kita semua kena kelentong dram minyak la... paham!! :rolleyes: either that or confirm most Malaysian got very very short term memory!! :eek:

expat1609
02-09-2009, 07:57 AM
when crude was at it highest... it was RM2.70 per liter... now crude is at USD 70+... shouldn't it be RM 1.35+
Kita semua kena kelentong dram minyak la... paham!! :rolleyes: either that or confirm most Malaysian got very very short term memory!! :eek:

the tactics are different, but the goal and the profit is the same everywhere...
in austria pump-prices changed up to 5 times a day !!!!
morning rush hour petrol more expensive, daytime with less traffic - dump the price to attract customers, comes 5 pm prices up - customers are coming anyway...fair isn't it ?
even now they forbid, can change once a day only, with different prices on every station, even shell is not same as shell 500m later.
grande confusione and the price they pay consists of 40% for petrol 60% tax

oil has been the big $$$ for ages and don't expect that to change in our life.

jimmyay
02-09-2009, 08:07 AM
I use RON91 in Australia for a 4 year old Toyota Camry. Cost me AUD1.20/litre. They have RON95 & RON98. I don't feel the difference cos everyone is running at 60km/h anyway.

And guys...consider NGV again. Ford & Honda in Australia had began to pre-fix on the car. It is proven technology...look at all the variety of taxis in KL. However, installer don't recommend on the Nissan (i am not sure which model).

totoro
02-09-2009, 09:36 AM
Try Nissan Leaf, Chevrolet Volt or others which are pure electric cars... the Prius, being priced at what it is, is more of a joke...

Sentinel
02-09-2009, 11:53 AM
It was reported somewhere that Proton Perdana V6 cannot use RON95 and this is in the manual, true kah? Can someone confirm?

bslee
02-09-2009, 01:27 PM
It was reported somewhere that Proton Perdana V6 cannot use RON95 and this is in the manual, true kah? Can someone confirm?

The compression ratio may be up to 10:1 and if this is so, it may have to be ignition timing retarded a wee bit. If can be adjusted manually, then its easy, but if fully controlled by EFI/ECU, then have to send back to Proton for some algorithm remapping solution. But my own judgement tells me, its still ok, may loose out some marginal pep.

If any engine compression ratio exceeds 10:1, then any engine with this and optimal tuning settings will urgently need re-tuning to adapt. RON 92 is certainly a no-no for 10:1 compression ratio.

CCY
02-09-2009, 03:19 PM
If any engine compression ratio exceeds 10:1, then any engine with this and optimal tuning settings will urgently need re-tuning to adapt. RON 92 is certainly a no-no for 10:1 compression ratio.
Would the fuel mixture self ignited on these higher compression ratio when running on RON92 like the principle of a diesel engine...?
If that's the case I don't see what you can do by twiddling the timing....other than switching back to RON97.

bslee
02-09-2009, 03:55 PM
Would the fuel mixture self ignited on these higher compression ratio when running on RON92 like the principle of a diesel engine...?
If that's the case I don't see what you can do by twiddling the timing....other than switching back to RON97.

You've to understand the mechanics of a combustion engine. Higher compression ratio further optimizes and marginally increase power output with the use of higher octane fuel. But too high compression ain't good as its bad with lower fuel quality. There's pros and cons in this implementation. A little more timing advance is only an optimization tweak within limitations, nothing more. Also taken into consideration is DYNAMIC advance at the distributor which vary greatly the timing when under load. Please realize all this.
Your ignition timing specs are STATIC timing at idle. Dynamic timing varies at different load and speed.
Diesels rely wholly on compression heat to ignite the fuel, they're not spark iginited. Diesels are way up to 20:1 compression or more.

expat1609
02-09-2009, 03:59 PM
This thread needs more Johnny Depp....

http://www.nerve.com/CS/blogs/scanner/2008/04/01-07/johnny_depp1_300_400.jpg

hehehe...cool...funny :D

gary yap
04-09-2009, 02:20 PM
Filled up RON95 on Wed, no difference in performance(... price also :( ). Maybe tank still have 7L of RON97.