I did a HCI swap a few months back, along with headers and a new throttle body. Car runs great when I want to go more than a few feet. The only thing is if I reverse or move forward just a short distance and then stop, the car stalls out sometimes. It will start right up after that, but if I don't give it gas it will just stall again immediately after starting up at a normal RPM, then it just declines until stall. No pattern that I can discern, sometimes I can reverse and it'll hold the RPMs rock steady, sometimes it'll dip a bit then recover, sometimes (maybe 25%) it stalls. Not a rough or jerky stall, RPMs just keep going down until it quits running.