[Ateam]

So I am wondering if there are some dynos of people with just a muffler showing whether they gain, lose or do not affect the hp. I remember in the past some mufflers would actually lose power on other cars due to having the cat-back piping way to large of a diameter and would hinder exhaust velocity. However all of the available mufflers for this car keep the OEM connecting pipe size and I am guess it really does not matter what you do in a muffler that could effect power.

I definetly do not notice any difference for the one I got which is completely straight piping through which has to be the most free flow. Maybe overly free flow is bad and loses hp or gain hp or how do all these brands actually do hp wise?