Re: ENGINE BREAKING UP AND MISSING BETWEEN 5000-6000 RPM
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Originally Posted by MVR 155
16:1 is waaaaay lean, if you are really at this A/F ratio I can assure you that you are very close to some serious problems (if there isnt already damage)...... even 14:1 is too lean, with a supercharged (or any other F/I induction vehicle) I wouldnt go over 13:1 personally since you want to leave a small buffer for bum gasoline and extreme conditions. Im a firm believer that whenever you do a major mod (such as internal motor work, forced induction, nitrous etc....) that it should be dyno tuned with a wideband A/F to get the max performance from the set up as well as be within safe parameters from detonation.
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If I am really running as much as 16:1 wouldn't the engine run poorly because its starving for fuel? The only time my gauges show that I'm lean is randomly when I'm not in boost. The rpm's don't change and the engine doesn't feel any different though. 
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