Lets talk Race Fuel

**cnhman2008** · 04-23-2012, 08:56 AM

Just wondering what you guys are running.I hear alot of the turbo guys are running Q-16 and the nitous guys are C-16 both are leaded so I am assuming its ok to run so a short period at the track. I have a 5.7 with 15-16 psi of boost and lookin to get the most out of it .What would you recomend ?

**truckinfouble** · 04-23-2012, 09:19 AM

Leaded will kill cats if you have them. Ive found TT101 for $5.95 a gal in Palatka Fl. Its 100 oct unleaded from Chevron.

**cnhman2008** · 04-23-2012, 09:51 AM

I have no cat's so thats not a issue thanks though

**bklynmag** · 04-23-2012, 09:59 AM

I'd talk with your tuner. If your set up can take advantage of race fuel maybe they can adjust timing and/or other paramaters.

**Srt_Driver** · 04-23-2012, 10:06 AM

My friend with a fully built sti runs the new shell race gas.i beleive its c16.so far its working out good

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**Tout09** · 04-23-2012, 10:11 AM

Alot of racers are switching to Shell UTR fuels where they were using C16, it is unleaded and has performed very well, you will need to check the tune to make sure everything is good.
Tout

**MagnumRT05** · 04-23-2012, 10:14 AM

E85 and a proper fuel injector.

**cnhman2008** · 04-23-2012, 11:43 AM

Originally Posted by Tout09

Alot of racers are switching to Shell UTR fuels where they were using C16, it is unleaded and has performed very well, you will need to check the tune to make sure everything is good.
Tout

Thanks I'll look in to the shell fuels I havent seen any around though. most local places only carry VP fuels

Originally Posted by MagnumRT05

E85 and a proper fuel injector.

Been there my twin pump setup dosent keep up with the volume needed to support E-85

**Jack SickSRT** · 04-23-2012, 02:03 PM

I run VP C-16 as it burns much cooler for the KB.

**TNCHARGER** · 04-23-2012, 02:29 PM

Lead also destroys the O2 sensors.....

**DarthCharger** · 04-23-2012, 05:25 PM

How much of a difference in octane rating fuel would require a new tune? For example my Charger is tuned for 91 octane and I only have 93 octane available, I think a new tune is not necessary. But if I go from 93 to 100 it appers that a new tune is required.

**sldhemi** · 04-23-2012, 07:41 PM

Needing a tune isn't much related to the "octane rating" as it is to the fuels specific gravity(oxygen content). The amount of oxygen in the fuel will determine whether you need a re tune or not. Obviously if the oxygen content is higher, the motor will run leaner. So fueling will need to be adjusted to keep your air/fuel ratio where it needs to be.

If you're looking to use one of the unleaded race fuels. Sunoco 104, vp 109, etc. then you will more than likely be fine without a re tune. It will just run a little safer.