Im running a pretty much stock gst 95 with the ic but i knoe my piping is to big the guy i bought the car from was going to change the turbo so whut is a good size piping for a t25 or should i just stick with it until i change the turbo myself? the pipin i believe is 3 in and a quarter

 

Are you sure its that big, thats massive!! I went big on my ICP for future mods, but if it is really 3.25" thenI would drop it down some if you have the money. What are your turbo plans?

 

Ill probably get a t28 but that wont be for a couple of months then what size piping should i use

 

I would suggest either 2 1/4" or 2 1/2" piping. Honestly do some more research before you get that T28, there are better turbos for less money.