does anyone know how to adjust the idle on an evo 8 without a ECU reflash

thanks

 

You can adjust the BISS screw on the T-Body though I dont recommend it

 

what is the BISS screw and why do not recommend it

 

BISS - Base Idle Set Screw

This comes pre set from the factory. In my expieriences once adjusted the ECU will always try to revert back to whats in the idle tables in the ROM.

 

thanks alot did you like ur tune from Jestr Im thinking about getting it

 

Yea jestr does great work. Car is bone stock except for a K&N Drop In it really picked up some mid to high end power with no knock.

ECUFlash is your friend though man read and learn, pay for a base flash and tweak it to your driving habits.