How big is the piping at the collector of the greddy headers?? just interested so i can get a hi flo cat to match up with them.
-98talonESi

i have a greddy 4-1 header connected to a 2.5 in straight pipe to my cat-back exhaust

but to be honest, the last time i was underneath my car it seemed like the greddy pipe was slightly smaller

i believe the greddy pipe is only 2.25" but it will connect to a 2.5" cat or straight pipe without problem

dont quote me though, im not 100% sure on the sizing

Here's some pictures I took tonight. Hopefully by this weekend I won't be able to do this (hint). I bought these Greddy headers used. Don't mistake the black outline on the collector for the opening.

Downpipe



Collector

Just buy a direct fit from Landspeedracing.com I have a greddy header and the PowerCore cat. is on the list of "to buy" stuff. Matt or Nathan will treat you good at L.S.R.:thumbsup

i'll sell you my bomz racing for cheap if you'll throw in your stock cat. its mated up with a greddy header/downpipe right now. :cheers