i can't seem to find what the gains would be with this. i'm assuming maybe 10hp/10tq, conidering with the catback it's around 7hp/7tq on the average and being that the s pipe is the most restrictive, i'm guessing another 3hp/3tq would be logical.

am i on the money?

 

I just bought a header-back system from wesellcarparts.com. Megan s-pipe, mid-pipe, and OE-RS axleback. I'm expecting a gain of around 10 peak hp, with the powerband shifting to the right.

 

is that 10 to the ground? i'm guessing this is so cus with the agency cat, they dyno'd at around 6hp/7tq or something to the ground. pretty decent.

 

We're both just guessing, but I think that's realistic