Quote:
Originally Posted by 2003chevy
when its cold or just started it does it a little but when it shifts a bunch of times and going about 30 or 35 in 4th gear at about 1100 rpm its really boggy sounding.
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That boggy sound is just AFM. I have a full catback that came with resonator so it's not much of a problem, except just knowing when AFM kicks in.
AFM is probably causing some extra vibraton that could be contributing to your problem.