Corsa X-Pipe

[Paul Workman]

Originally Posted by 32valvZ

Which mufflers you using Paul?

Currently, I'm unfortunately saddled with some Magnaflow dual outlet mufflers. They don't eliminate drone, but do mitigate it somewhat. At issue is the fact that the 3" inlet necks down to approx 2-1/4".

Following the example of others (e.g., Bob Banks for one) I may keep them, but install a pair of cutouts ahead of the mufflers with a switch in the console(?). (I'd be interested to see what my HP would be with cutouts AND after porting the TB to 63mm. Last time dyno'ed it was 432 @ the wheels. Anything around 440 to 445 rwhp w/ stock cams would put a big smile on my face!