Ok trying to help a mate tune his car, it has a 226 234 113 cam and have just put a 90mm Pro Comp throttle body and TPIS 90mm lS6 manifold.

I cannot stop the thing from spiting the IAC valve out of its housing (It comes all the way out where we have to remove it and put it back together then reinstall. It also upon firing idles at 3000rpm and will not settle. Please find attached a log and the tune. I have tried many different things to stop it but can't seem to make it idle normally.

Jason COS5 Speed Density 2003 model ls1 manual_0012.tunJason 90mm throttle idle.efi