AAM Competition S-Line Short Tail Axle-Back Exhaust

christian370z

I don't see how it can negatively impact power over the stock muffler. The level of restriction in the exhaust goes like this in my opinion (1 being the most):

1) Stock catalytic converters
2) Stock Y pipe
3) Stock muffler

I am sure these will provide decent gains since they are eliminating a pretty convoluted stock muffler design.

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-320whp / 259wftlbs-
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Footloose301

Seems to be that the straight thru design of AAM axle backs would be the same as just removing the stock muffler thus decreasing torque...? Perhaps I'm wrong and I am just pulling this out of my *** but idk. I realize te stock muffler is restrictive but axle-backs (IMHO) seem like they would take away too much back pressure....... It would be nice if a few people could describe how the butt dyno feels or an actual dyno.

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2010 40th Anniversary 370Z