Effects of an Elevation Change? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Moto-Mojo · 09-21-2018, 01:26 PM

Tuners, will moving from near sea level to 1600 feet affect performance? I ask because it seems to have made a difference. And not for the better! Thanks.

gtstorey · 09-21-2018, 03:29 PM

Everything else equal yes, but I don't know that 1600' would make a big difference. But I'm not a tuner anyway.

granatl · 09-24-2018, 08:47 AM

The first time you turn on your key following an atmospheric air pressure change, the MAP will read the base kPa and the ECM should adjust automatically.

gtstorey · 09-24-2018, 10:54 AM

Still slightly less pressure/oxygen to burn. Looking online, seems like about 3% per 1000 ft as an estimate.

09-21-2018, 01:26 PM	#1
Moto-Mojo Fast Cars and Old Guitars Drives: 2015 2SS RS (L99, baby!) Join Date: Apr 2012 Location: N. CA Posts: 3,966	Effects of an Elevation Change? Tuners, will moving from near sea level to 1600 feet affect performance? I ask because it seems to have made a difference. And not for the better! Thanks. __________________ “I don’t want to belong to any club that would have me as a member.” - Groucho Marx

09-24-2018, 08:47 AM	#3
granatl Drives: 2SS RS ABM A6 Join Date: Jun 2010 Location: Pahrump, NV Posts: 273	The first time you turn on your key following an atmospheric air pressure change, the MAP will read the base kPa and the ECM should adjust automatically. __________________ Jack Bilger

09-21-2018, 03:29 PM	#2
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,142	Everything else equal yes, but I don't know that 1600' would make a big difference. But I'm not a tuner anyway.

09-24-2018, 10:54 AM	#4
gtstorey Drives: 2010 Camaro SS2,L99, LSA SC Join Date: Aug 2017 Location: Huntsville, AL Posts: 2,142	Still slightly less pressure/oxygen to burn. Looking online, seems like about 3% per 1000 ft as an estimate.