Originally posted by DavidBC:
Maybe my best choice would be to replace the black sewer (clean BTW) pipe with some 3" dia. stainless exhaust pipe. We'll see.
The plastic is much better insulation. I almost made an intake out of ABS myself, rather than getting the CTA, but I couldn't find an elbow I was really happy with, and I was hoping to get a 2.5" diameter pipe instead of 3", this being a better match to the TB and MAF.