I'm not sure what's going on with my engine now but I've been noticing bogging at about 4~5k. It feels as though like I forgot to clamp the hoses on my throttle body for my TMIC however I have upgraded T clamps there. I also have a APS turbo inlet installed but I don't have a proper tune on it. I never had this problem before and now it's starting to happen more frequently. I'm going to check it out after work today but wanted to know if anyone has an idea of what it could be. The only other thing that I have on the engine is a catch can. I'm running it the same way I used to on my WRX engine. Unfortunately, the APS turbo inlet does NOT have that rear nipple to run separate catch cans.