Quote Originally Posted by drewhanover View Post
woops, meant the resonator is going back on. im currently running lean, as i installed SD headers and a 3.4 pulley while deleting the resonator all at the same time.. Still waiting for my PCM to be shipped to me. Stock cat back, except for the straight pipe in place of the stock resonator.
Why would you think the resonator delete is the problem when you say it was all installed at the same time? Also are you running a true wideband to know that you are lean? As long as the same pipe diameter was used on your stock exhaust then it isnt the problem nor anything else you've put on.