Got the car tuned in pretty well and idling nicely, however I have notice one annoying thing which i can't figure out. For some reason if the car is coasting to a stop at idle it will begin to surge. once you stop the idle tables must change and the surging will always stop, but any time your rolling with 0% throttle at an idle rpm it will surge... Any suggestions on what to look at or change? I have enclosed both a screen shot of the scan, and the tune. File
I thought it was possibly the fuel or spark cells it was pulling from had drastically different values causing the surge, so i put all the same values in for the timing and smooth out the fuel tables. this didn't help.