SonicBlue2v03GT
New Member
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
Some say a straight through type muffler gives you better gains, but it all comes down to personal tastes and likes IMO.
Some say a straight through type muffler gives you better gains, but it all comes down to personal tastes and likes IMO.