04 GT New intake manifold and car now has a rough idle

I'm new here but I have a 04 GT standard trans and my OEM plastic manifold broke at the heater hose fitting so I replaced it with a professional products typhoon intake manifold and I installed it and now the cars idle is very rough. Bouncing between 1200 rpms and 500 rpms. Thought it could be because I may have air in the cooling system but I'm pretty sure I got all the air out and now the car runs fine sitting but as soon as I rev it or let off the gas and coast with the clutch down its sits at 1200 rpms then almost dies and goes to 500rpms then its back to normal idle at 800 rpms. All my vacuums lines are good and I'm running out of ideas, I replaced my plugs about 300 miles ago so Idk if it's a spark issue. Could it be a bad IAC or TPS since i did clean the plenum with brake clean and parts cleaner while it was off

Shuttleman83 said:

Clear and reset battery KAM for 30 minutes to 2 hours.

Click to expand...

I'll do this today but will I see improvement immediately or am I gonna have to drive for a while with the rough idle for the pcm to learn

Well I finally found my problem, my IAC valve must have clogged because I removed it and used almost a whole can of throttle body cleaner in the IAC then bolted it back on and now the rough idle is gone and I got my power back. I missed my stang so much