Join Date: Apr 2008
Location: Grass Valley, CA
Re: Stock vs. Aftermarket Downpipe
It would give you a noticeable difference in EGT's and spoolup time.
the stock downpipe at the smallest point is about 1"x3" square, and going through a tight bend at the same time. it's the most restrictive POS i've ever seen on a factory system.
96 Powerstroke: 6637, downpipe to dump exhaust, 140v IDM and a shift kit.
84 Honda Sabre V65 1100: pipes, jet kit and new tires. Faster than I think I'll ever need.