yeah, call him or email him, i emailed on a saturday night and got a reply first thing sunday morning. customer service is #1

 

I have the same problem with code p505. I replaced the IAC and the ECU and problem still there. I IAC opens when it shouldn't and send the RMP to 4K. Checked and no vacume leaks. Ordered a TPS hope that fixes the problem. If it dosn't what else could be causing the problem?