I know what you're thinking. I have a boost leak, you're gonna say. BUT I DONT. I tested and it's holding 20psi just fine. The problem is very weird because it is running rough on idle, runs fine at cruising speed, but bogs like i blew an intake pipe when I floor it and the turbo is spooling 1-2k rpms later than it did with the factory hose.
I replaced the pipe with a homemade radiator hose setup and it ran just fine except it took forever to spool, so I tested for leaks, it had one, and changed how I had it connected to the intercooler. Now its running terribly but holds boost. The check engine light comes on during pulls and there's a loud ticking sound that scales with RPMS near/around the intake manifold.
I know you guys can't do much without being with the car and seeing what I did, but any guesses would be appreciated. Thank you