es I balanced the primary tps, but couldn't figure out the secondary tps on the android tune ecu as it was grayed out, ( couldn't select it) I think I read somewhere on here that there is an idle screw, but I don't see one, just adjusting the stepper motor to adjust the idle, is that correct.
Well the idle screw is there but it is set at factory and best not to mess with it.
the stepper motor is not for setting idle it is more like a setting for the throttle position sensor. you can use tuneecu to back stepper all the way off and set tps at .062 volts
then when normal set tps adjusting nut to read .072 to .074 after that the ecu adjusts the fuel mixtures and volume and stepper motor to achieve ecu desired idle.
on my 07 it does not do very good for cold idle but works great after it runs a couple of minutes.
now the tuneecu has a selection for desired idle most of the guys selected 850 but i choose 750 and that maybe a little fast i think that normal is 650
hth herman