98 Octane Fuels - what do you use?

[mazgtr]

The only way your car would gain performance from V-Power Raceing (100 Ron) is if your cars ECU is tuned for that fuel.

Otherwise it wont give you any gains.

In my Evo VI i did notice an improvement running the 100 octane fuel, buts thats because the car had a aftermarket Japanese ECU that was obviously intended for even higher octane Japanese fuel.

I have read previously that Shell use a lot more additives for their fuel than other brands.

A friend with a tuned Mazda GTX with an Apexi SAFC used to notice more knocks and slight detonation running Shell 98 as opposed to Mobil and Caltex.

[SoVeReIgN]

The only way your car would gain performance from V-Power Raceing (100 Ron) is if your cars ECU is tuned for that fuel.

Otherwise it wont give you any gains.

In my Evo VI i did notice an improvement running the 100 octane fuel, buts thats because the car had a aftermarket Japanese ECU that was obviously intended for even higher octane Japanese fuel.

I have read previously that Shell use a lot more additives for their fuel than other brands.

A friend with a tuned Mazda GTX with an Apexi SAFC used to notice more knocks and slight detonation running Shell 98 as opposed to Mobil and Caltex.

I beleive with the APR/GIAC etc tune there is still a little bit of leeway and the ECU will advance the timing further to suit 100ron?

Might also find a touch of knock sensor retardation when running a 98 tune on 98 fuel, 100ron will sort that out too

[mazgtr]

I know Timbo with his Revo tune, has several maps on his ECU.
One of which is a 100 Ron only tune.

I would still think the car would need to be re-tuned over the base 98tune to gain any real bennefits.

I know the ECU will retard performance when a lower octane fuel is used, but as to improveing performance by going from 98 to 100 i dont think so.

Must allready have a 100Ron tune map within your setup IMO.

[Sharkie]

Guy from APR told me long ago that you would see about 2kw & 2-3NM extra with V-Power Racing with the std flash, no extra tuning required.

In Brisbane near me its normally $145/l (and the price doesn't fluctuate) so when 98 V-Power is dear I use the Racing. When 98 is $130/l I use that.

I felt a bit extra power, but that might have been me just wishing it to be the case ...

I also believe the contents to "go off" due to the ethanol blend because if I don't use it all quickly it seems to noticably drop in power....

[VW GTI]

In Brisbane near me its normally $145/l (and the price doesn't fluctuate) so when 98 V-Power is dear I use the Racing. When 98 is $130/l I use that.

I was about to ask where in Brisbane sells V-Power Racing, then I saw your $145/L :p

Seriously though, where is it in Brisbane?

[PeterHBne]

Shell at Bulimba (cnr oxford st and hawthorne rd) and Shell Milton on Coro Drive.

Price is usually $1.45 however I've noticed with prices these days it does go up from that.

Who would have thought 2 years ago we'd shrug our shoulders at $1.50 a litre for fuel? Madness.

I sometimes use V Power Racing and believe you can definately feel the diff. it feels more than 2%.

It is not economical though - I did a couple of economy runs with it and it is not as economical as 98 fuel - propensity to squeeze the go pedal aside.

[VW GTI]

I filled up tonight with V-Power at $1.48. If I'm ever out Coro drive way I'm gonna get some of the racing. See what it's like.