is there anyway to tune ur car to run better at different elevations? its a crx with a multiported d15...but i drive back and forth alot from eugene oregon to klamath falls oregon, it runs awesome in eugene but runs horrible and sluggish in klamath....any help on this?

elevation differences are from 500 ft. to around 4100ish...

 

The performance change is due to the outside air pressure. The higher you go, the less dense the outside air is. Lower air density means less oxygen to burn, which means your car injects less fuel. I live in colorado, at an altitude of nearly 5k feet year round, and sometimes go on drives to as high as 9k feet.

You can fix it easily with a turbo kit or supercharger, or by using a fuel containing its own oxidizer, like nitrous oxide.

 

i think theres a sensor in the car for this i think its the one inside the car up under the glove box? buy my car does it too.

 

the sensor under the dash is the PA sensor which detects the atmospheric pressure and the ECU adjusts the air/fuel mixture to compensate for the pressure - as sanimalp said before, at higher altitude, less air, which means the engine needs less fuel - less fuel means less power - at altitudes above 5000 feet, like here in Colorado, you will lose about 20% or more of the power - with our NA drag car, we took it to Phoenix and ran about 8 tenths quicker than what we run in Denver

 

My car runs the same when I take it up to eugene from florence and thats only 500-1000 ft diff. so I'm in for the fix to. Or is it just stuck being that way?

 

is there no way to fix this problem???

 

 

haha sure I'm gonna run a 25 shot every were. I'm down. Till I fry my b2 rings to hell.

 

back from the dead.....anyone know a fix other then boost???

 

i wouldn't call forced induction an easy fix for this under any definition of the word. you could try replacing the pa sensor if by chance its not sending accurate info to the ecu, but theres no guarantee it will fix it. if it was malfunctioning i would expect a code to show up, but you never know. i don't know how that amount of elevation change could/should affect your engine, so not sure whether it would be considered normal or not.

 

hmm..well it definately runs alot better at lower elevations, its just so damn sluggish here its pissing me off...

 

u could also low boost it with those cheap *** ebay turbo kits

 

Anyone ever heard of a MAP sensor. Manifold Absolute Pressure. They came up with them for a reason, So when you do change elevations ur car can adjust itself. It sends a voltage refrence signal to the ecu that corresponds to the pressure it senses within the manifold. It automatically senses the baseline altitude upon start up. If a problem occurs then consider looking at the sensor itself for replacement.