Ok, I posted awhile back trying to solve a surging idle problem on a JDM B16A SiR2 in an EG. Well I'm still trying to solve the problem . It only occurs when the car is fully warmed up. I have the skunk2 throttle body that does not have a FITV so I have the coolant lines that would have run through that just running in a loop. I've replaced the IACV, bled the cooling system, tested the TPS voltage, couldn't find any vacuum leaks, tried putting a block off plate between the IACV and the intake manifold... All with no success. If anyone has somemore insight please help me out!