I have a Falcon stainless steel exhaust on my BT7, which I think is fairly high-flow (at least it sounds loud, for better or worse).
The car drove fine, but on hot days, it was running rich enough that the exhaust fumes (especially sitting at a light) would kill you.
So I leaned out the mixture a tad, which improved hot idle, but now I get exhaust crackles and pops on deceleration (which I never had before).
Now on the scale of "Hey, the tuning's finally right!" to "Crap, I'm running dangerously lean!" what are the little backfires indicating?
The car drove fine, but on hot days, it was running rich enough that the exhaust fumes (especially sitting at a light) would kill you.
So I leaned out the mixture a tad, which improved hot idle, but now I get exhaust crackles and pops on deceleration (which I never had before).
Now on the scale of "Hey, the tuning's finally right!" to "Crap, I'm running dangerously lean!" what are the little backfires indicating?