Anybody got them? How do they sound? Any HP gains

 

come on somebody help me out. I need help on making a purchase

 

We have sold plenty of kits, and just recently a customer of ours encountered a fitment issue. Flowmaster seems to be coming through though on the warranty claim. Other than that I have never had a problem and they sound great! Let me know if you need one and I will take care of you.

Derek

 

I love mine.....no problem with the reported broken baffles.....They just keep sounding better with miles, to me....

Mike

 

they are just bolt on right? No welding required?

 

Yep. I'm considering them.

 

I love mine also. They're not too loud but have a nice smooth aggressive tone during acceleration. Bolt on no problem...no issues here.

 

I have the FlowMasters 40's on, Inwhich I had to have them welded on. Over all, I'm pretty happy with them, Just wish there where a tad louder. Now I'm having the Pypes X-pipe installed in a couple of weeks, so I'm curious to see the change in the exhaust note. but so far the best sounding Axle back set-up so far I have heard ( and probably going to go with myself ) is th IMCO's http://www.grabthepower.com/mustang-promo-front.html

Heres a sound clip of mine, with just the 40's
http://media.putfile.com/MVI-0178

 

I love my american thunder. Sounds great, looks great and it installed really easy. All you need is some simple hand tools and some time.

Jacking it up makes it easier but not necessary

A couple of different rachets help but also not necessary

Enjoy

 

I threw a pair of American Thunders on my 06 GT. They sound great. Idle is just slightly throatier than the stock. They really shine between the 2-3000 rpm range. No hp gain though. Still, they were worht the price. I did axle backs which is all you need if you are not planning on swapping headers. The pipes on the car are sufficient. Buy'em you'll like'em! Good luck!