Anybody done a muffer swap without buying a complete cat back system? On my old mustang I just changed out the muffler for a dynomax and had better sound and more power. Lots of people did that because it worked and was cheap. Haven't really heard of anyone doing that with their G's. . . or are some of you doing that and not just posting about it? Let me know what you have done and how it has worked.

 

According to NissanPerformanceMag, changing the muffler may not do anything:
"Local Nissan tuner JWT has tried some exhaust tests on two different 350Z’s. With the exhaust system completely unbolted from the Y-pipe back both cars made little to no power over stock. This makes us wonder how adding an exhaust even from the Y-pipe back will provide dramatic gains in power. "
Article can be found here

 

Yeah the stock muffler has pretty good flow, it is the Y pipe that is the bottleneck in the stock system

Keep in mind that it is not a big bottleneck, 10RWHP (dyno proven) at most from any catback system out there...

<font color=green>-Rambo</font color=green>
G35c 6MT DG/Willow/HyperGround/BorlaExhaust

 

Ok, thanks.

 

And which catback system shows that 10 hp??