Elevation issue? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Teeth · 02-23-2024, 09:21 AM

Just drove my car up to Payson (5000ft elevation) from Phoenix/Scottsdale (1000-2000ft elevation).

And now I'm having some weird idle/acceleration feel to the driving. Car isn't in the beeeest condition since I do need to fix a couple things on it, but figured a small cruise wouldn't be too bad even after the roadtrip from South Carolina a month ago.

Nothing felt weird until I came back down from the mountains and halfway through? Any thoughts?

gtstorey · 02-23-2024, 10:27 AM

If it wasn't properly tuned after some of your mods, the elevation change might push things outside the capabilities of the ECM to compensate. Typically you would expect any of these problems to set a DTC, but the tuner might have turned them off to prevent "bring backs".
This is assuming that you are still at elevation. If you are back down to "normal" and still have problems, you might have bigger problems. Or you have a DTC set that is pushing it run in a default strategy. And again the code may be off, or it's set to not turn on the check engine light.

Aqua Blue RS/SS · 02-23-2024, 10:29 AM

Hard to say for sure if you’ve got issues you know about. Could be in your tune as well. I’ve done that drive a few times with 100 mph being the minimum speed the entire way and never had a problem. It’s a fun drive going up the climb to payson at speed but it kills the MPG’s lol.

Teeth · 02-23-2024, 01:57 PM

Quote:

Originally Posted by gtstorey

If it wasn't properly tuned after some of your mods, the elevation change might push things outside the capabilities of the ECM to compensate. Typically you would expect any of these problems to set a DTC, but the tuner might have turned them off to prevent "bring backs".
This is assuming that you are still at elevation. If you are back down to "normal" and still have problems, you might have bigger problems. Or you have a DTC set that is pushing it run in a default strategy. And again the code may be off, or it's set to not turn on the check engine light.

Quote:

Originally Posted by Aqua Blue RS/SS

Hard to say for sure if you’ve got issues you know about. Could be in your tune as well. I’ve done that drive a few times with 100 mph being the minimum speed the entire way and never had a problem. It’s a fun drive going up the climb to payson at speed but it kills the MPG’s lol.

Thanks guys, might look like I have to do the big maintenance on the car sooner than later, no worries about that though!

And the drive is a lot of fun, I had never noticed the elevation change the last time I did this.

02-23-2024, 09:21 AM	#1
Teeth Drives: 2010 Chevrolet Camaro SS Join Date: Sep 2019 Location: Columbia, South Carolina Posts: 223 View My Garage	Elevation issue? Just drove my car up to Payson (5000ft elevation) from Phoenix/Scottsdale (1000-2000ft elevation). And now I'm having some weird idle/acceleration feel to the driving. Car isn't in the beeeest condition since I do need to fix a couple things on it, but figured a small cruise wouldn't be too bad even after the roadtrip from South Carolina a month ago. Nothing felt weird until I came back down from the mountains and halfway through? Any thoughts? __________________ 2010 Camaro 2SS/RS: Cyber gray matte wrap, Danti Lambo style louvers, Granatelli Pro-stock look wing B&M transcooler, Mishimoto oil cooler, Mishimoto catchcan, Borla/Pypebomb axle back L99 to LS3 conversion, Vararam ram air intake, BTR Nightfury cam, Johnson lifters, LS7 injectors, Circle D 3200 stall converter, Kooks LT headers, Custom X-pipe

02-23-2024, 10:29 AM	#3
Aqua Blue RS/SS Drives: ABM #93 Join Date: Oct 2018 Location: Lotaburger Posts: 2,696	Hard to say for sure if you’ve got issues you know about. Could be in your tune as well. I’ve done that drive a few times with 100 mph being the minimum speed the entire way and never had a problem. It’s a fun drive going up the climb to payson at speed but it kills the MPG’s lol. __________________ ABM #2399 2SS/RS:SOLD ABM #93 2SS/RS Black Rally stripes, Titanium Interior 4,000 miles: GM GFX side skirts and diffuser waiting on paint, GM dovetail, GM heritage, RPI ZL1 style splitter. ‘87 IROC-Z Iroc blue. all original unmolested with 50K miles.

02-23-2024, 10:27 AM	#2
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,155	If it wasn't properly tuned after some of your mods, the elevation change might push things outside the capabilities of the ECM to compensate. Typically you would expect any of these problems to set a DTC, but the tuner might have turned them off to prevent "bring backs". This is assuming that you are still at elevation. If you are back down to "normal" and still have problems, you might have bigger problems. Or you have a DTC set that is pushing it run in a default strategy. And again the code may be off, or it's set to not turn on the check engine light.