|
steiner43511 07-12-2004, 10:38 PM on the stock exhaust system where the downpipe bolts up to the pipe, is there a flange in there or not. i havent had the chance to lube those bolts up enough to get them loose to see and i want to cut out that piece for my 4" at work tommorrow. just curious. quantum mechanic 07-13-2004, 10:20 AM In '94 GM added the soot trap/CAT with a 4 bolt flange. The downpipe should be the first piece replaced and if you have it bent out at a local shop they don't have to put the CAT back, although I do like the Idea of faking it up to look like it's there for emissions tests and/or inspections. I took the simple(but costly) route and ordered '93 downpipes with no flange. at $150 US each from bullydog. I plan to go 4" in the near future and will find a shop to make(bend) it locally. steiner43511 07-13-2004, 01:27 PM is there a gasket in there? quantum mechanic 07-13-2004, 01:42 PM It's a metal exhaust gasket. | ||