FLEXIBLE EXHAUST TUBING, It stainless steel and comes in 2, 2 1/2 and 3 inch. Comes in 5ft, 10ft, and 25ft sections.Im just thinking shortest run, not peiced together, no custum fab, bend it exactly how u want.
http://www.jcwhitney.com/autoparts/ProductDisplay/s-10101/p-1021/c-10101

you COULD use that, but you definitly do not want to. first off its going to flow horribly and second it does not bend as easy as you think, it only bends to a certain extent and you might not be able to get the angles you need for ic piping. do it right the first time and either buy and IC kit or get a shop to mandrel bend you some 2.5in alluminum piping. you really want to stay away from that stuff.

Originally posted by import1996rs
and second it does not bend as easy as you think, it only bends to a certain extent and you might not be able to get the angles you need for ic piping.

agreed. I've used it for other stuff also and if you need to bend a 8 inch piece (just an example) it is way to hard to get it to come out right and most times the joint will break.

I think if you do a search you'l find that someone else tried it and it leaked like a mofo too.

check this out my friend, im using it temporarily on my fmic/smic/new turbo setup because im not exactly sure the bends i'll need until after i get it all bolted on.

"akimoto spiral flex intake piping"

....:thumbsup