Tune for High Altitude
 

I live in Colorado Springs CO with an elevation of over 6,000 ft. During the summer, DA may reach 8,000 or 9,000 feet. My question is:
Can the ECU compensate for the low air density and maintain the proper A/F ratio, or will it always run rich because it is beyond what the ECU can adjust? The car is stock, but I thought perhaps a dyno tune would ensure I'm not running rich. There's quite a bit of black soot inside the exhaust outlets.

Thanks.

No issue on a stock car.

It takes a barometric pressure reading at startup which should help it compensate for elevation. Whether that actually works perfect or not in the real world, I do not know.

Under part throttle / closed loop I have no doubt that it will adjust just fine. It's WOT / open loop that may be off. Not saying it is.. just that would be my only concern

It should be fine though.

Its fine. GM test up to ~10k feet or something. It is not an issue. If it was, all GM cars/trucks would be blowing up left and right at any high elevation place.

14k, but who's counting. ;)

Not that you'd know or anything ;)

:funnypost::lol: