Sunoco Racing Fuels

JvKintheUSA

Anyone know if using Sunoco Racing Fuels will add power or could it damage the engine?

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kenchan

wat octane is that? 100?

ZCarMan

Where you been? Haven't seen much of you lately but I see you've moved to GA.

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Jon

kannibul

Waste of money...

Unless it's oxygenated, and even then, it's a waste of money - you'll get more power...safely...from boltons.

takumi

save your money and buy the sunoco 94

kannibul

Save your money and just get 91 out of any gas station that carry's "name brand" fuels.

Anything over that, unless you have a timing advancement tune, or forced induction - that REQUIRES higher than 91 octane, is a waste of money.

JvKintheUSA

Thanks for the feedback y'all!

ZCarMan - Yes I moved to beautiful Georgia last November. Roads here are so much better than in NE Ohio

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SE

This is incorrect.

VQ37 can run higher octane fuels without a tune. 91 octane is just the MINIMUM recommended octane. You can get more power out of a slightly higher octane. The ECU will automatically adjust the timing/fuel trim curve for the best power/economy to a certain extent, meaning that since 91 is the highest grade premium found in some states, use of a higher octane fuel will yield small power gains and trigger the ECU to adjust timing as a result.

However, I wouldn't recommend running higher octane (92+) all the time, since better mods can be purchased for the same price as a few fill-ups with high grade premium.

I also wouldn't recommend running higher than 96 octane or a 91/100 mix, since the ECU will most likely not be able to adjust itself to the 100 octane race gas, and 100 octane race gas is damn expensive. Just make sure it's unleaded unless you want to kiss your O2 sensors goodbye.

takumi

not true at all 93 is the min you want to put in that car or any other modern performance car.

Scott @ RA

^^ +1 Mostly true (for the most part)....
Its not as if the ECU will actually advance the timing to generate more power if there is higher octane fuel (that is a little misleading). The ECU will however detect slight detonation and retard timing as needed to an extent (which is caused by heat and other variables, but mostly caused when octane is too low).

OP, basically what others are telling you here in a nut shell is higher octane other than 91/94 is pretty much a waste of money for you at this point. You will not see any noticeable gains, or gains at all using higher octane fuel. Also, stay away from any extended use of leaded fuels, it will eventually burn out your 02 sensors.

Vegitto-kun

The sticker on my car tells me to use 98 octane so I follow it.

Only problem with the GT-R is that it tells you to use 100 which no gas station has here.