CPS difference between High Altitude or not?
12-26-2010, 10:15 PM
#1
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Location: San Antonio, TX
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Year: 87
Model: Cherokee
Engine: 4.0
CPS difference between High Altitude or not?
Have an 87 Cherokee Pioneer 4wd 4.0Liter designated as high altitude on the firewall sticker.
Does anyone know the difference between a CPS with high altitude and a standard CPS w/o high altitude?
If your jeep is located in a low altitude region can you run the low altitude CPS even if the jeep was high altitude setup from the factory?
What is the difference in a jeep setup from the factory as high altitude?
Does anyone know the difference between a CPS with high altitude and a standard CPS w/o high altitude?
If your jeep is located in a low altitude region can you run the low altitude CPS even if the jeep was high altitude setup from the factory?
What is the difference in a jeep setup from the factory as high altitude?
12-26-2010, 10:54 PM
#2
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Year: 1988
Model: Cherokee
Engine: AMC242
As I recall, the HA CKP was advanced a couple of degrees from the standard (2-4 or so, probably not much more than that.)
Installing the HA CKP is a fairly common "performance mod" on standard RENIX, with mix results (per reports from the field.)
You can probably throw a standard CKP on the HA RENIX, as I do not believe there's any significant difference in the ECU (the timing curves may be a bit different, but nothing that the system can't adapt to.)
Installing the HA CKP is a fairly common "performance mod" on standard RENIX, with mix results (per reports from the field.)
You can probably throw a standard CKP on the HA RENIX, as I do not believe there's any significant difference in the ECU (the timing curves may be a bit different, but nothing that the system can't adapt to.)
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