Quote:
Originally Posted by 1cleanZ
The noise you're talking about..."pop pop", is more of a backfire. This is most common in the nonresonated setup, which IMO is just "pissed off" sounding! It doesn't happen every time, but on an occassion when you hold your rev in the higher RPMs and all of a sudden let off, you'll get a "POP!" Puts a smile on my face very time! 
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Thanks. That is what I figured. Can this sound be adjusted (made louder or quiter) by tuning he car differently?