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Procharger Challenge!
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<blockquote data-quote="BillyGman" data-source="post: 2354060" data-attributes="member: 19962"><p>Yeah, some engine tuners have different formulas for what they've found to be best in their own tuning experience in order to avoid detonation in supercharged engines. Some engine tuners go with more timing advance, and richen the air/fuel ratio (AFR) more, while others, run an AFR that isn't as rich, and run a more conservative ignition timing advance to keep supercharged engines away from pinging. For instance, a local engine tuner told me that in supercharged engines you should NEVER run a leaner AFR than 10.5:1 or 11.0:1. But that depends on what your timing advance is. AFR and timing advance aren't totsally independent of eachother when it comes to avoiding detonation in the supercharged engine.</p><p></p><p> Some engine tuners place more emphasis on a conservative timing advance, and claim that the timing advance is more important for staying away from detonation in supercharged engines, than running a pig rich AFR is. Either way you still have to run on the rich side with a supercharged engine ofcourse, but some engine tuners run their customers' engines more rich than others do. All I know for certain is, that so far, I have 19,000 supercharged miles on my ride, and a stock botton end, and so far, it's great. I never thought that this can be done with a compression ratio of 10.0:1 but Lidio is one of the guys who has proven that old theory wrong. It really depends on the tune.</p></blockquote><p></p>
[QUOTE="BillyGman, post: 2354060, member: 19962"] Yeah, some engine tuners have different formulas for what they've found to be best in their own tuning experience in order to avoid detonation in supercharged engines. Some engine tuners go with more timing advance, and richen the air/fuel ratio (AFR) more, while others, run an AFR that isn't as rich, and run a more conservative ignition timing advance to keep supercharged engines away from pinging. For instance, a local engine tuner told me that in supercharged engines you should NEVER run a leaner AFR than 10.5:1 or 11.0:1. But that depends on what your timing advance is. AFR and timing advance aren't totsally independent of eachother when it comes to avoiding detonation in the supercharged engine. Some engine tuners place more emphasis on a conservative timing advance, and claim that the timing advance is more important for staying away from detonation in supercharged engines, than running a pig rich AFR is. Either way you still have to run on the rich side with a supercharged engine ofcourse, but some engine tuners run their customers' engines more rich than others do. All I know for certain is, that so far, I have 19,000 supercharged miles on my ride, and a stock botton end, and so far, it's great. I never thought that this can be done with a compression ratio of 10.0:1 but Lidio is one of the guys who has proven that old theory wrong. It really depends on the tune. [/QUOTE]
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