I'm piecing together an inlinepro stage 1 turbo kit and the previous owner had an exhaust cutout welded onto the downpipe already. I ran a Berk test pipe with an aftermarket exhaust system for a few thousand miles and even though I dont DD my car, I couldn't stand the smell and it gave me headaches, so I put the stock cat back on.

I haven't installed the turbo kit yet as I'm still piecing it together. I know that if I run the downpipe the way it is now (with the exhaust cutout) I may not be able to put up with the smell. So i was thinking of running a high flow cat. I was wondering if it would be possible to have both the high flow cat AND the exhaust cutout and if it would have enough clearance.

 

Yes, for many they install the cutout so they can run a cat and have no penalty. I ran the full factory exhaust including cat and just put the cutout in front them.

 

Scott - I followed your thread on ur previous inline pro kit build. I know this may be a long shot but would u have pictures of the exhaust cutout?