anyone with cai/y-pipe and other various power mods live near the triangle in NC? id like to see what difference these mods make before i invest in them myself..

 

Have you done a search on the the threads.. There must be like a zillions threads on Cai's & Y-Pipe. You might even find some dyno graphs.. But yes, the Y-Pipe make a difference after 3000RPM more pull in mid-range and high. The Cai is good for low-mid too.. Cheapest mods for the bang