Running V Power Racing 100 Octane Fuel In Engine Tuned For 98

[45ULT]

its not the higher octane that leans the af's out but more so the 5% ethanol in v power racing. u have to run your car slightly richer when using ethanol but the bonus is u can run alot more timing hence make more power. this has been proven using 2 different fuels both 98ron however one was e10 and the other had no ethonol. the e10 ended up making 30kw more power after a re-tune on the same boost. so if u have the stock computer then definitely run V power racing it'll only make things better. however if u have had the af's changed i'd recomend getting them checked with the V power racing fuel to make sure they're safe.

[BaysideBlue]

yeah I no longer run stock computer. have a pfc tuned to around 12:1 afr so guess I should just stick to 98 for now.

If I do get the car tuned on 100 octane V Power Racing later on, would it hurt to run 98 octane (v power, ultimate) occasionaly in case V Power Racing is not available?

Edited July 10, 2007 by BaysideBlue

[sweetr33]

only if your intentions are to cruise, or put 10 bucks in to get u round till vp racing is available, getting car tuned on 100 n then go use 98 isnt advised. just dont give it full load

[BaysideBlue]

getting car tuned on 100 n then go use 98 isnt advised.

WHat about Boost 98, E10 98RON?

Has ethanol content but 98RON. Does the car still need to be retuned in order to run it safely?

[cosworth1971]

skylines are ment for 100 octane as that is standard octane in japan so there already tuned for that

[BaysideBlue]

skylines are ment for 100 octane as that is standard octane in japan so there already tuned for that

wait, is there a difference between standard 100 octane in japan and V power racing (100RON)?

I have been told our standard 98RON fuel is equivalent to 93 octane fuel in the U.S?

[Crossie]

my r33 is tuned for 98 (V-power) i put 100 in if go to the track, i find it great for less knock

[Beer Baron]

100 octane fuel is not 'standard fuel in japan'. Yes 100 octane (and in some places higher) is available but 99% of all japanese cars, including skylines etc are happy to run on 95 octane when standard. obviously when modified a better fuel is a smart choice.

bayside, the reason people would tell you that is the US use a different method of measuring the octane rating of their fuel.

[pinni74]

Here is a link for a Motec test on V-Power Racing - there is a pdf that has detailed report on what they did and what figures the acheived - it even outperformed avgas when the engine is tuned correctly!

so if you tune your car right you can expect some good results from V-Power racing it seems

http://www.motec.com.au/fueltest/

[BaysideBlue]

Here is a link for a Motec test on V-Power Racing - there is a pdf that has detailed report on what they did and what figures the acheived - it even outperformed avgas when the engine is tuned correctly!

so if you tune your car right you can expect some good results from V-Power racing it seems

http://www.motec.com.au/fueltest/

Thanks. Great article!

Worth a retune to 100 octane it seems, a relative cheap way to get more power with the benefit of higher anti knock safety margin!

[BaysideBlue]

100 octane fuel is not 'standard fuel in japan'. Yes 100 octane (and in some places higher) is available but 99% of all japanese cars, including skylines etc are happy to run on 95 octane when standard. obviously when modified a better fuel is a smart choice.

bayside, the reason people would tell you that is the US use a different method of measuring the octane rating of their fuel.

Whats the deal with North America having 100 octane fuel (105RON equivalent) available in selected fuel stations while the best we have in Australia is "only" V power 100RON?

[Beer Baron]

I don't know why they get higher rated fuel, but I guess they have a pretty good handle on controling the crude oil market...

[cosworth1971]

I can get 102 on pump here in adelaide (4$ a letre tho)my 12.1 rally car needs that and avgas(110+) on pump here too(2,20$ a litre)but u need racing licence for that.I tried 102 in my skyline but nknew it would only be good for cleaning it out.nissan recomend 100 or at worse 98+

Edited July 26, 2007 by cosworth1971

[pinni74]

Cheers BaysideBlue

Yeah it is basically free horespower without makeing any mods to your car, well no mods aside from tuning the car to suit - if you can get a few extra horsies just by pumping them into your tank rather than emptying your bank account and bolting stuff to your engine (and then having endless troubles when the mods you put on don't work and have to make more mods to get the original mod going right - c'mon someone here is nodding having been down that road like myself) than that is a good thing!

I filled up a tank of VPR and so far i do notice the difference - just waiting to see how many K's i get on the one tank - so far looking good

Edited July 27, 2007 by pinni74

[DECIM8]

I noticed jack all difference... Pretty stock r34 .. maybe slight power increase down low .. Noticed id be at redline faster but cant feel it much .. Cost me 1.51 a litre and did last longer but to get it is hard and for the cost its a rip..

If you want a power boost hit up caltex vortex

[pinni74]

I noticed jack all difference... Pretty stock r34 .. maybe slight power increase down low .. Noticed id be at redline faster but cant feel it much .. Cost me 1.51 a litre and did last longer but to get it is hard and for the cost its a rip..

If you want a power boost hit up caltex vortex

Ah yes but bear in mind you need to advance the timing to get maximum benefit from VPR it will improve your performance - you car is tuned to run 95-98 not the 100RON - give another tank a bash and get your timing adjusted - if you get it all right you will see better performance on V-Power Racing.

[MZTRBO]

Its been said bu using the ethonal based fuel will cause yor car to lean out, if modified and not tuned for the ethanol..

Mines tuned on BOOST98, the fuel is cheap and i got great results with it..I think the ethonal fuel was the basis on the surprising power output my car made (40rwkw more then I and everyone else expected and imagined)..

The benefit to using ethonal is the timing they can add into the car which = power.

[MZTRBO]

I just repeated the post above mine in regards to the added timing, woops.

I cant get over ethanol fuel

[cosworth1971]

mid range power yes but less timing u can go within reason is best for top end.depends what u want?

and no u wont feel massive power gains with 100 octane but maybe 1/3 second a lap if your timed

[BaysideBlue]

anyone has info on boost 98 versus v power racing 100? which would result in a better gain after a retune?