kornerz

iTrader: (5)

So, I bought an 04 m6 that has ps long tubes, o/r mids but it still has the stock cat back. I have a bunch of randome mandrel bends and an h pipe in my garage from previous builds (and a welder). How much would I leave on the table if I would stick with the stock mufflers? I also want to keep the stock mufflers because its so nice being able to hear my self think. Let me know what you guys think

svede1212

iTrader: (3)

The stock system will work fine (and sound great) without leaving much on the table until you bump up the HP quite a bit. Drive it and enjoy.

Rob

iTrader: (6)

^^^ I agree. Had a Corsa and went back to the stock cat back. Sounds a lot better and only lost a handful of HP on the dyno when I was around 430rwhp. It flows surprisingly well for a small exhaust.

BMR Tech2

iTrader: (5)

You're seriously?

I'm running Corsa and would never dream of running another exhaust ever again on any other car.

Rob

iTrader: (6)

Very serious. It was an alright sounding exhaust and obviously flowed a little better, but the stock cat back sounds great. Its just not loud enough, IMHO. But it has the best tone of any GTO exhaust I've heard.

BMR Tech2

iTrader: (5)

I hear that a lot from the '04 guys. They certainly got it right with that exhaust. They sound great. The '05 GTOs didn't sound nearly as nice.

redtan

iTrader: (5)

You serious?? Clearly you have not heard a gto with an h pipe and spintechs.