nickate

iTrader: (5)

I got the dyno sheet and the car did almost what I'd hoped for...
Dynojet

382@6400 hp
365@4900 tq.

M6 car
224/224 .583 112lsa
all bolt-ons (underdrive pulley too)
LS6 intake
stock tb
NO CATS

ONLY THING I REFUSED TO CHANGE is the stock ORIGINAL muffler and pipe from the y back.

Is this hurting me? (The stock muffler)

I was hoping for 400 but no cigar.

Suggs?

Grimes

iTrader: (3)

Not bad, sounds right on. The stock muffler is not that great, but it's not horrible either. You'd maybe gain 10hp if you switched to say a hooker catback.

Smoothing just gets rid of the little ripples and jagged points on the hp and torque curves.

Screamin_Z

iTrader: (2)

screw the hooker, get a magnaflow catback. it would sound better IMO.

BlackScreaminMachine

iTrader: (17)

Yea the stock muffler is hurting, put a cut out on and you will prob see 400

nickate

iTrader: (5)

For my tastes.
This muffler has some baffles in it

I come from the turbo Buick world where things don't have to be loud. My '89 TTA w/bolt ons and valve springs went a best ever of 11.54@118 with a 1.53 60' and a 2800rpm stall. AND IT WAS QUIET!!! lol.

This thing already has a very sharp almost bark when you hit it. It's cool and I'll get used to it I guess!