Hello everyone, I am new to the group! Recently got myself a 03 Rsx-Type S and I was driving one day and my check engine came on, i scanned it and it came to be a P0511 Idle air control circuit. I have done a lot of digging on forums and I still continue to have a huge idle surge after the car warms up, the rsx will rev from 1k-2k. I have changed the iacv and try to do the relearn, also deleted the Idle air assist, I have an RBC IM and I have used permatex on the K-Tuned adapter on the lower left and upper right nut to compensate for the tb. I can also put my hand on the throttle body and the car will shut off so I'm thinking it shouldn't be a vaccum leak. I'm really out of option but the last thing I would think would be tuning, and one last thing is the car is K20A2 but I'm using a 06 rsx ecu so idk if that has to do with anything.
881.6 KB Views: 22