[GTP Version 2.0]

So i just received my new parts from ZZP. I order shorter front engine mounts (dogbones), a new Eaton bypass valve, and a throttle body spacer. So I start by changing the dogbones and everything went great. Next I change the eaton bypass valve and started up the car and everything once again is fine. I had also picked up a can of Seafoam Trans Tune and put that in (I will be putting in my shift kit in a week and wanted to run some Trans Tune before the install). I started the car again and everything is fine. Next I put on the throttle body spacer. I followed the directions, and used their new studs and gaskets provided, but now when I try to start the car, it idles INCREDIBLY ROUGH and almost dies if I don't hit the gas. I drove the car down my street and everytime I come to a stop the car will almost die. My car is a 1997 GTP with 147000 miles. I'M CALLIING ALL PROS TO HELP ME ON THIS ONE.