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Discussion Starter · #1 ·
Quick question?
What gas and octane are you runnin?
my LT1 hates 87-89 is it only me?:eek:
 

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ive ran regular(87) for the past 4yrs. just fine
 

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Car should run just fine on 87 octane, unless the PCM has been tuned for premium. Is the car all stock? Mileage? Post your car make model, recent maintenance items replaced, and symptoms in the maintenance section and you'll get some responses as to what it could be.
 

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If your PCM hasn't been retuned for a different octane, and 87 doesn't run properly

a) you have a problem somewhere
b) someone modded the engine to require/prefer more octane, but failed to properly retune the PCM to account for it (this happened to 'dogma')
 

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Quick question?
What gas and octane are you runnin?
my LT1 hates 87-89 is it only me?:eek:
What problems are you having? How many miles is on the engine? I run 87 octane through my LT1. I've never had a single issue, not even while racing at the track.
 

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I tried switching to 87 from 93 on my under 30k ss a few thousand miles ago after reading that im throwing my money away with high test, and i didnt like it. I can't recall exactly why, but i think it had somethin to do with a hesitation and also engine noise.
 
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