I've just finished doing an h/c/i on my car. Ive done the idle reset and adjusted the throttle body and it will idle steadily around 8-900 rpm. It intermittently surges to around 2000 and it stays there for a bit and then will drop back down to normal until I try to drive it. After I get it moving and let off the gas it feels like pedal gets stuck at 2000 rpm for a few seconds before it comes back down. There is also a noticeable smell of gas. I haven't had it dyno tuned yet as I want to make sure it runs correctly before I do that. Is this a tuning issue as I know these ecu's can be finicky or is there something else I should be looking for.
I can try and get a video later today if that will help.