*2.8 tvs e85 etune march2015.hpt
*cold start.hpl
*cold start 90 degree.hpl
Hey guys,
I have a 2.4L cobalt on E85 with a TVS supercharger (lsj throttlebody, 160# Injectors, intake/full exhaust (catless). A friend tuned the car, but due to the fact he never sees the car when its cold he hasnt had a chance to mess with the cold start symptoms im having.
first id like to say im 99% sure there are no vacuum or boost leaks. ive checked all over and have even removed and reinstalled most of my set up and still had same issues.
On cold start the car will want to idle at 500-600rpm The entire time the car warms up despite having changed the minimum idle speed to as high as 900 at times. Eventually after the car hits the 120-130 degree range the idle begins to surge hard and it will eventually stall the car making it a huge pain in the ass to warm this thing up.
Can anyone shed some light on some changes I might need to make to improve this? or do i have something disabled or conflicting with another table? my ecu has been through a few different tuners and i dont have an exact stock file to reference. two log files attached, in both log files i turn the car on and i dont touch the throttle, any throttle fluctuation is caused by the car
once the car is warmed up the fuel trims are perfect but occasionally it will drop below 500 rpms when coming to a stop and sometimes stall.
Thanks,
Beck