I was able to run 15 psi no problem. But i wouldn't go any higher than 17psi as long as your on stock turbo. As far as the upgraded side mount. If you are just trying to not spend alot its worthless to get a new side mount. The stock one will do. I would just buy both upgraded upper and lower IC piping. If you have the money then just get a front mount kit. If not do what i just said. This site has a bunch to look at. I'm sure you could find it other places cheaper, but it will give you an idea.
http://www.dsmtuners.com/parts/defau...6a5fff41b285a0

 

website is not work. Also what are the specs on the stock ic? like the effecancy percentage, outlet and inlet temps and what is the drivetrain loss in percentage. I am trying to get anccurate estament on HP with this excel sheet I got on DMS tuners. right now with the default settings and 13 lb of boost it says i am making 271 crank hp and 217 wheel hp.

 

You'll never get a real idea until you get to a dyno. Either way I'm closing this thread. until it was reopened it hadn't been posted in since 2004!!