idle and code help please

I bought a bare shell EX-CHP for $200 and decided to put the car back together. It has TFS heads, Stage 2 TFS cam, and a TFS track heat intake on a stock Shortblock. The check engine light is on, and will come on about 10 seconds after I start the car....but when I start the car, it revvs to 2,500 for about 10 seconds then drops to idle. The other problem is when I stick it into gear(T5) the motor cuts out for a second then comes back to life. I cant get it to code read KOER, bbut with the KOEO I get a 67. I replaced the neutral switch on the tranny and it is no different. If anyone has an idea on where to start, please chime in. I have added grounds, cleaned the MAF, changed the MAF, BAP, EGR, TPS (and set it to .98v). Every sensor is plugged in, and I am stumped. I have never had this problem. Please help if you can. Thanks!

IAC is very clean. I know what the code is, there is NO ac on the car, and the car is in neutral when I run the test. Also why would it cut out when I put it in any gear?

I looped the wiring that goes to the pedals(the sensors are missing) and it doesnt do anything weird when I put it in gear. now the only problem is still a code 67, CEL is still on and it wont KOER code read. Is it OK to just leave the pedals like that? Do you still think there is a wiring issue?

Thanks