Join Date: Jan 2007
Location: Florida Panhandle
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Just for reference...The gauges DO suck, but the factory trans temp sender works great. I have an OBDII gauge in mine that I added after I already had been running the ISSPRO's for awhile. I had EGT, Boost and Trans Temp and then added the digital gauge. I compared trans temps for a few months and found they read within a degree or two when temps are steady or only changing slightly, but the OBDII gauge is much more responsive and shows the changes faster than the ISSPRO, I think that the aftermarket sender moves slower due to the temperature of the case and the factory temps read the fluid temp better.
Long story short, the factory sender for trans temp has proved accurate. It just warms up and cools off a bit faster than the ISSPRO aftermarket gauge. I don't have a factory trans temp or a boost gauge. The OBDII gauge is less than ideal for boost because it read absolute pressure from the MAP (Manifold Absolute Pressure) sensor and the OBDII system doesn't read coolant temp even though that factory gauge stinks too. I settled on a combination and run one digital OBDII gauge, along with an analog EGT, Boost and Fuel Pressure gauge.
I don't mean do degrade anyone else's choice, but I would caution you to at least do some research before getting the glow shifts. I have a few stubborn friends that bought them and wish they hadn't. Reliability has been an issue for them.
2000 Ext. Cab F350 SRW, 6" Skyjacker lift on front/8" BDS Springs on rear w/NO blocks, 37x13.50 Nitto Mud Grappler's, Aftermarket Front Bumper
-Always More Stuff Coming!