Just installed a pypes offroad x pipe I scored off Craigslist
For $100 it sounds absolutly fantastic with my weld-in
Super 44 flowmasters , next mod CAI
Go with the CAI
Paired with exhaust you will be extremely happy with the car at that point.
Then go with Underdrives next for even more horses.
These are easy mods with great gains. IMO of course.