So I just spent 6.5 hours Saturday night putting OBX headers on. Holy sh*t! What a PITA. It had to be done because I'm hoping to be S/C by next fall. Anyway I used non foulers to get around CEL's and after 60 miles none yet. However, the car is a little too raspy for me and I want some suggestions on a good high flow cat. Thanks in advance. BTW If I knew how I would post a video. I'm lucky to be able to log on to NT.