Thread: N54 Backfiring?
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      07-11-2011, 07:21 PM   #11
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Originally Posted by Dackelone View Post
Originally Posted by IGoFast1589 View Post
Backfires come from a rich mixture, Dackel...

That is a myth - I believe.

I have had some tuning experience with SW tuning (on Volkswagens and Porsche's)many years back, in the early 1990's. Most of the time a popping back fire is from running too lean a fuel mixture. I know common sense says its must be too rich of a mixture... but it is more common for it to be from a lean mixture.

I believe you, I know it happens from a rich mixture but if it's coming from a lean one then that's a real issue. I don't really see logically how that works but I know you know what you're saying. Just adding my input to the conversation.
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