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Go Back   REVscene Automotive Forum > Technical Discussion > Advanced Forced Induction & N/A Engine Tuning

Advanced Forced Induction & N/A Engine Tuning This forum is brought to you by Racing Greed in Port Coquitlam.
Supercharger vs Turbocharger vs NA? Hondata vs Megasquirt? 94oct vs 87oct? Through technical discussion, let's find out what will the best option for you...

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Old 10-04-2012, 09:10 PM   #51
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Quote:
Originally Posted by IMASA View Post
I've noticed that as well, I can not run the Cobb OTS 93 octane maps on our Chevron 94 gas without geting knocking. I even have knock when running the Cobb OTS 91 maps. In order to run knock free, I run about 2-3 degrees timing less than the Cobb OTS 91 octane maps. BTW, I'm monitoring knock using a MSD Dash hawk and Cobb AP to datalog.

Can anyone explain why our gas is so bad?
I noticed this too. I am running the 91 program for my 1.8T and gets a lot of pinging when I actually put 91 in. Now I'm running Chevron 94 and there's still a little bit of pinging.
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