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  #13  
Old 02-19-2014, 12:06 AM
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Re: Octane rating for the SRT ?

Over here in Brunei.. we have both RON 95 and 97, which is equivalent to US 91 and 93 respectively.

Most advertised HP from the factory (470hp) are based on the highest RON or Octane reading.. which is RON 97 or US Octane of 93.

so, if you were to use a lower fuel rating, you will not get the maximum hp, the engine is capable of making due to ignition retarding to prevent the engine from knocking.
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  #14  
Old 02-19-2014, 12:19 AM
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Re: Octane rating for the SRT ?

The thing is, the US have 91 AKI as the highest Octane available right ? And the car is manufactured in the US .. Doesn't that mean the car is built to withstand 91 Octane (95 RON) as the highest rating ? Which means anything after that doesn't really make much of a difference ?
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Old 02-19-2014, 12:28 AM
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Re: Octane rating for the SRT ?

Just as Akon mentioned... the higher Octane or RON will give better performance.

The highest Octane in US should be 93.
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Old 02-19-2014, 12:33 AM
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Re: Octane rating for the SRT ?

Hmm so you guys suggest that I change from 95 to 98 RON ?

Any complications now that I have 2K on it already using 95 ? What is the correct procedure to switch to a high octane fuel ?
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Old 02-19-2014, 12:39 AM
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Re: Octane rating for the SRT ?

The higher RON is preferable, coz you will never know the actual RON rating of the fuel in the petrol station. They may advertise as RON 98, but overtime during storage, the octane in the fuel will evaporate and this will in turn lower the rating of the fuel.

The SRT's engine management can adapt to the fuel change.. so, don worry. You just need to fill the car up with your desired fuel and just drive it like usual.
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Old 02-19-2014, 12:41 AM
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Re: Octane rating for the SRT ?

What is the, per liter price of RON 98 in Dubai?
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  #19  
Old 02-19-2014, 01:15 AM
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Re: Octane rating for the SRT ?

How does the SRT engine management adapt to fuel change ? Any source on that ?

Also, around $0.55 per litre for 98 RON and around $0.50 per litre for 95 RON. (I'll confirm actual prices on my next visit to a petrol station).
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Old 02-19-2014, 01:19 AM
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Dark Hue, I think your over thinking the whole fuel thing. Just chuck in the higher octane. It's better. Lol. It only cost u 3cents a little extra.
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Old 02-19-2014, 01:21 AM
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Re: Octane rating for the SRT ?

when travelling at a certain RPM, the engine management will go into closed loop mode.. this enables the engine management to make changes to the parameters to adapt to the type of fuel you use.

HowStuffWorks "How Car Computers Work"
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  #22  
Old 02-19-2014, 01:24 AM
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Re: Octane rating for the SRT ?

we're paying SGD0.53 per litre for 97.. lolz.. So, a full tank will be about SGD50.
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  #23  
Old 02-19-2014, 01:24 AM
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Re: Octane rating for the SRT ?

Quote:
Originally Posted by vvM1LESvv View Post
Dark Hue, I think your over thinking the whole fuel thing. Just chuck in the higher octane. It's better. Lol. It only cost u 3cents a little extra.
Haha I'm just too careful when it comes to such things. I don't want to damage the beast in any way !!

Quote:
Originally Posted by august77 View Post
when travelling at a certain RPM, the engine management will go into closed loop mode.. this enables the engine management to make changes to the parameters to adapt to the type of fuel you use.

HowStuffWorks "How Car Computers Work"
Thanks for the link !! I love feedback control systems and this source is interesting
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  #24  
Old 02-19-2014, 01:26 AM
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Hey guys I will never again use 95 after my last tank of 95. I had to put a tank of 95 in last week (as that's all my local station had) and after about 10 min or less of driving I could notice a massive drop in performance , I'd say probably 10 - 20%( not kidding ). So all week it's been in the back of my mind until this morning when I done a launch of 5.4 to 100kph whereas my previous average was 4.8 (as low as 4.6) stock. The biggest thing I found was that it just didn't want to kick down as quick or just seem as keen to get moving. Anyway that's my 2 cents. I'll be filling her up with no less than 98 as soon as this sydney weather stops (she only had a clay bath and polish yesterday arvo).
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