Just got my car back out from changing back to the stock intake manifold. First thing very apparent to me is a quick oscillation of RPM. About 750-1200 back and forth every second. I tried smoothing out my VE to help soften this and it didnt really help. Watching my gauges, while this is happening it doesnt make a difference if the IAC is in Closed loop or not. It can be at a constant 50 steps and it still oscillates rapidly. With this intake the car usually idles in the 46-42 step range. Even tried messing with the PID settings to get it to catch and slow down the RPMs, and although it was in CL, it still couldnt stop it. Normal Idle map is 55 kPa, it was going from 48-72 while it was hunting. Of course my AFR was all over while doing this, probably because of the over run fuel cut setting. Sound like a tuning issue or a vac leak somewhere?

Sounds like a vacation leak to me. Could be tuning but sounds like your prov is a vacation leak.

Vacation leak? lols. I got you though. I guess Ill try the starting fluid on anywhere there could be a vac leak test?

Sorry for whoever had to move this btw.

Well, biggest FACE PALM ever here. I get the new gaskets, get the intake off the car for the 4th time, and I notice something. My FPR vac line has a tear where it goes on the vac nipple. A huge tear thats an obvious vacuum leak.....That would also explain my AFR being all over the place.