Join Date: Feb 2011
Location: Edmonton, Alberta Canada
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It's the temperature probe. There is ZERO chance that your exhaust is getting to 2400 degrees because of the Edge, unless you have a friggin acetylene bottle hooked up.
The gauge converts electrical resistance in the probe to temperature so there is a spot somewhere in the wire where it is shorting out causing the resistance to jump around. Also, keep in mind that if you shorten the wire to the probe you will also affect the resistance and cause an improper reading. I don't know how much of an error it will produce but it will be some kind of small error.
SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.