Rough idle after reflash tune
 

Hi guys, kinda need help here. I own a 2012 86. Engine running turbo. Changed clutch and pulleys. It has been tuned before with ecutek. On a recent tune, i decided to retune it again based on a forum chat here on the annoying idling sound. So now after reflash the car seems to misfire, i can hear feom the exhaust that 1 piston is not firing properly. But during driving and blasted it was fine. Only the throttle feels slightly hestated. I have replaced my spark plugs and coils to trouble shoot but none seems to solve it. Theres no CEL warning on it as well.

First thing to do would be flash back the turbo tune that worked, before you altered tune with your changes

right after the idle went nuts, i tried reflash back to the previous tune. start it back up, same issue again.

Ok


Keep the original tune in, then do some logging


Check your ltft at idle should ve less than 10% if its way positive you probavly got exhaust or intake leak,cgeck the hoses under intake manifold are clamped on


Cgeck idle manifold pressure it should ve about 0.3 bar with engine running


With engine stopped should be 1 bar


Check afr at idle should be close to 14.7


Ignition timing at idle once warm should be arround 11-13 degrees

I havent tried any as my tuner is out of town and basically i am waiting for my buddy to check using his obdii scanner. For now as i remembered i asked him to do the things as attached