Not as much gain with Msds as you might expect. I dynoed at 174hp, 154.4tq with KKM,Pro-flow 75mm MAF, SHO-Shop Y-pipe/cat, and Borla cat-back. Switched to MSDS Vortech Spec) Headers and Y-pipe, Stock cat, dynoed at 179.3hp and 156.7tq. I'm still running stock chip, so I'm sure that it is not "tuned" to optimize performance for these mods. If you haven't done any other mods, would suggest you work on intake and cat-back exhaust first. As for install of headers, I had them installed when doing Quaife and clutch install. There are folks on this site that have done install on their driveways, seems to be a 2-man job with lot's of universals and extensions etc. As for sound, with stock cat and Borla, sounds great. Not too loud until I really step into it then it roars. Definately gets attention!
