Originally Posted by sahara89
so your saying the 10hp that every company says it gives it is bs?
It might be 10hp additional to a New Challenger/Camero/Roush Mustang at---6500 rpm, but
To a 3.8L jeep V6----nope !!
My Flowmaster dual cat-back even cut down the mileage/response at highway speeds--
The 3.8L (old), design is for a measureable amout of BACKPRESSURE and when you apply those muffler systems--it's gone !!
There ain't no reason for it, just the way we doit !!
Enjoy the sound, or the performance loss--or both, I do !!
OH, by the way, even the fairly new Avenger Supercharger system, loses over 15% of it's ADDITIONAL power, when coupled with the FREEFLOWING muffler systems !!