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Race gas vs. pump gas on same tune

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Old 10-27-2010, 10:05 AM
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Default Race gas vs. pump gas on same tune

I'm getting ready to head to the track later on tonight and thinking about buying some race gas. I have used it before in my turbo cars to control detonation, but wondering how it would do on my 98 N/A street car.

I don't have my MSD box on it yet, so I can't advance the timing myself.

Question: If I put 5 gal of 112 in my ride, will the factory PCM advance the timing due to better octane? IE: make more power with the race gas vs 93 pump gas?

If the timing twister was hooked up, I would put 2-4 more degrees in it and then it should need the race gas?? But I'm wondering if I am wasting my money if the computer won't advance the timing itself..
Old 10-27-2010, 11:34 AM
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Pointless assuming your NA tune is good.
If your tune sucks then sure it might work. But so might pulling the ECU fuse to reset trims.
Old 10-27-2010, 03:24 PM
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No it wont advance the timing anymore then is in the high octane spark table. Running that high octane of fuel is pointless, you will actually be running to little timing.
Old 10-27-2010, 04:26 PM
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Originally Posted by CamaroSS22
No it wont advance the timing anymore then is in the high octane spark table. Running that high octane of fuel is pointless, you will actually be running to little timing.
Thanks man.. this verified what I was thinking. Unless I used the MSD timing twister box or changed the timing tables there is no need to run race gas since the computer wont advance the timing to match fiel anyway.

word up...
Old 10-27-2010, 05:18 PM
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if tried putting race gas and it didnt do anything to my times.
im not tuning pro but
thas my story




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