Christos

Hi there, I am thinking of picking up a ls1 Camaro. I was curious if anyone has any tips, or information about using LS1 edit at this altitude (Denver, CO).

A friend of mine took his 2002 SS to a dyno. When he plugged in his hypertech, his car ran slower back to back vs a stock tune. I wouldn't want to hurt my performance by changing anything with LS1 edit, so I am just curious what you people at high altitudes do for tuning.

66ImpalaLT1

Its because hypertech "power" programming sucks.

I havent done anything special, just be aware that if you're near your injector limit at altitute, you will exceed it at sea level.

7000ft here.

kevinb

Altitude messes everything up. Just remember if you lean it out a lot, when you go to a lower elevation it will be really really really lean.

66ImpalaLT1

I havent noticed that problem with my car. I think its more of an issue with supercharged cars where the pcm cannot determine barometer correctly.

One day I drove from 1100ft elevation to 9200ft non-stop and logged the whole thing with EFILive. The LS1 pcm recalculates the ambient pressure every time you go into PE mode.

Texas Terminator

the MAP should compensate for most of it anyway.

emarkay

Stock car - no problem, Baro, Temp and other ambient data are measured and adjusted for.
Once you edit, or modify, that's where a thermodynamics refresher course comes in handy...

Christos

Sounds like I have a lot to learn. I wish there was a true tutorial for LS1 Edit out there. It seems like there are only peices of information here and there.

Guess it's time to read through the forum archive.

Thanks for the info guys!

Thomas

Corvette Connection & Performance, Inc.
5380 N. Washington
Denver, CO 80216
303-298-8388

Just came back from Dyno-Pro with 498 rwhp from one of our mild kits! Check out our website, especialy the race pages. We practice what we preach!

We are sponsoring Club Clash this year too! Come by the shop and I will see if I can point you in the right direction!

Also FYI. Hypertech seems to do most of their performance tuning above 90Kpa, so it doesnt work so when our Baro hangs around 85Kpa!

red ws6 99

I have a twin turbo trans am, the altitude here in New mexico is only 4200 ft but I have not had to anything to compensate for the altitude. I have driven the car up at 10,000 ft with no issues. I do have an in-car wideband o2 setup, so I can tune pretty accurately. Just like any tune it has to be specific to your setup. The power programmers, etc are very good and even with 93 octane. I would guess that Denver like New mexico only has 91 octane which is going to cause a ton of knock which is going to make you loose a ton of power.

Gary