i just put a type r tb on my skunk2 manifold. i run a p28 based rom in my p72 ecu. i had no idle probs before and now, i have my idle drop to 625 whenever i stop with no load on the engine. i have my idle set in the rom to 750 and before it used to be dead on. now, i find my target idle actually fluctuates down in hondalogger to low 600s. Why would it do that? I increased the IAC duty cycle a little but that didn't solve anything. The tb doesn't have a fast idle valve like the gsr did. i bypassed the coolant lines to the tb and ran it directly to my IAC.

torin