exhaust back pressure
i recently bough an 07 2 door jk and decided to drop the muffler to see what it sounded like...supprizingly its not very loud, and its deep. however, i didnt notice the torque seemed flat under 2000rpm. the cats are still on, so i figured there would be enough back pressure. has anyone else noticed this? i like a deep sounding jeep..who doesnt, but at the cost of performance im not sure its worth it. opinions?