Quote:
Originally Posted by ecotoy
Thanks for explaining that bit of car *intelligence* to me 
No known mods to manually tweak fuel-air mixture ratio that the ECU operates on? |
The atmospheric or barometric pressure sensor. If you put a 25k pot switch on it, you turn it down until the idle speed lowers. There are no funky lights or warnings to contend with. You are simply telling the ecu you are driving at a higher altitude than you really are.
They are usually three wire, ground, 12v, and one thats around 2-5v. The lower voltage one is the one you want to put the switch on.