100613mat

I know it isn't gonna help with performance. I just think it look good and sounds better than stock.

markkk

well uhm when the NTO kit was available i bought it, got an x pipe, mid pipes and 2 gt mufflers with hangers. you can buy all that stuff seperatly for a great price. my gt mufflers sound awesome for my car, i highly recommend you take that path, itll be the most satisfying. also on americanmuscle an x pipe for our cars is marked at gains of up to 8 hp, which although it may not be completely accurate itll give you a small enhancement, at least thats what i felt.

06V6Andrew

i do fell an increase in power with exhaust if it's done right. As long as a good amount of back pressure and not just a free flow systems and a tune is done at the same time.

Blacksmoke

The stock exhaust leaves PLENTY of breathing room.
A tune will add more power to the car due to the TUNE.

The exhaust is not adding more power.... and a tune is not needed for exhaust, besides shorty/long tube headers that require an 02 sensor adjustment, etc. Furthermore a tune with a muffler swap is not going to give you more gain than a tune without a muffler swap.

conejo172

Blacksmoke is on point! Exhaust is going to be a visual upgrade and better sound upgrade more than anything else! Going with long tube headers on a basically stock 4.0 is a waste of money will sound horrible and will actually effect your performance in a negative way. The 4.0 with only CAI, dual exhaust and Tune needs the backpressure to feel the performance gain from the tune. I had 37,000 miles on the 4.0 when I traded it in on the 5.0 I know what Im talking about.