Quote:
Originally Posted by edub370
tbh i imagine both will make similar gains in the same areas (mid to high powerband), not saying fi's aren't great. i just am willing to say PPE's would make SLIGHTLY more because of their stepped design.
just my  |
They really won't. The FI headers are great street parts, but their runners are too small to see large gains at the top of the rev range like the PPEs do.