anyone have the american thunder ctaback?

I have the American Thunder catback with the Delta 40's which is a tad quieter than the original 40's. I personally love the sound. The drone is not too bad on the freeway. I didnt notice any gain in power at all, but i put them on about 2 weeks after 3.73 gear swap and the SCT tuner, so maybe would notice a little bit on their own. I personally recommend them :nice:

Some say a straight through type muffler gives you better gains, but it all comes down to personal tastes and likes IMO.
 
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Ryan02Stang said:
Oh my god. If I have to hear ONE MORE PERSON say you are going to LOSE horsepower by running Flowmasters I am going to go nuts. YOU WILL NOT LOSE ANY POWER FROM FLOWMASTERS!!!

Practically anything else out there will net more power, we're talking 1-3hp either way here so it doesn't really matter anyway.