i put a tune in a car

[stripes]

and i cant figure something out.

it runs great when the main plug is plugged into the obd2 port but when i unplug it the car wont fire. and i cant figure out why. the computer doesnt have to be hooked up but it is just that little box that has to be attached in order to keep the car running?

any help would be great thanks

i have tried reloading the tune like 3 times and i loaded the calibration with the new op system and i also tried loading just the new calibration and nothing has worked?

[joecar]

Stripes, welcome...:cheers:

Sounds like you have a PCM ground connection problem... when you connect FlashScan to the OBD2 port it provides the PCM with a ground connection.

You need to check all the grounds, you will need a wire diagram.

[stripes]

k ill have to look into that for sure. thanks man