I am tuned at 5400 feet.
Looking to run at 630 feet in a couple months.

Issues?? Or will the computer learn?
N/A if it matters.

 

If your tuner tuned the maf correctly, you will be fine.

If they did not, then you may have issues.

Ryan

 

mr luos.

I have done this ..went to 500 ft. from Denver. and I have been fighting my idle on and off. its getting really close. . my AFR looks pretty good just the darn idle. besides the idle my car did learn the new altitude pretty good.

 

Agreed. If you're running a Speed Density tune however, and eliminated the MAF entirely, you'll definitely run into an issue or three....

 

If your tuned for SD, it'll be quite lean.

Properly tuned maf, afr should not change.

 

Okay.
It isn't SD, so good there.

Idle may need adjusted, safe just to use the screw on the TB to help it find idle?
I won't have any software with me. At least I don't believe I will.

 

If anything the iac won't have to open as far to control idle with the denser air. It should be fine as is.

Best of luck with faster times in the thick air