Originally Posted by downsti

bell mouth has alot more turbulence since its a shared flange, thus making exhaust flow alot less free flowing

while the "long runners" divorce wastegate like the crucial racing DP, which basicly runs two different primary, and meet to one in a better manner, creating smoother exhaust transition

think of it as aftermarker headers for any cars, longer primary and smoother transition the better performance

its the very same downpipe i used when i took the first vf39 in the 11s ever haha

here some more pics of a the downpipe from a different suby owner

Crucial Racing Downpipe and Up Pipe (PICS)

Subaru Impreza WRX STI Forums: IWSTI.com - View Single Post - GD: JJ's 2005 OBP/Black Diamond RE's - Full Race Header/JDM Fogs added! - EFI Tuned!

Originally Posted by downsti

i have a 2 piece Crucial Racing Downpipe Divorce wastegate design and also ceramic coated off my old STi

i will post pics soon

these are the two piece downpipe, you can mix and match it with the stock two piece/cats downpipe, when smog is needed just sway out one of the pipe and it will easily pass the sniffer, no need to take off the full downpipe



Updated: september 25 2012 for pictures

sorry for the bad quality pictures,turn up your brightness

Originally Posted by Blazingbuda40

ok so is their no benefit of having a bellmouth?

Originally Posted by joltdudeuc

DIBS

You got PM Pare!