Egt ???

[Mario210]

I did a search on pre turbo and post turbo egt. I read alot of old threads and most folks say there should be a 200 deg. difference. I have a 05 with an E/J/A(pre turbo gauge) and an autometer post turbo gauge. My truck is running only 40-50 deg. difference when i am driving a steady 60 mph. Is the 200 deg. only when your hammering the pedal???? When i do a occasional WOT i do have about 125 deg. difference,but not 200 deg. Could someone tell me if the 200 deg. is correct??? THANX

 

[TSpecht]

I believe the harder you work the engine, the higher difference in temperature readings you get. For example if you run it at maximum rated engine load you'd see more than that probably. I don't think there's a good way to correlate the difference in pre/post turbo for every possible load etc. The temperature differential is just a rule of thumb, and can be off significantly based on load and fueling.

 

[TCluff]

I believe the harder you work the engine, the higher difference in temperature readings you get. For example if you run it at maximum rated engine load you'd see more than that probably. I don't think there's a good way to correlate the difference in pre/post turbo for every possible load etc. The temperature differential is just a rule of thumb, and can be off significantly based on load and fueling.

very true, i have seen differences of around 400 plus from manifold to down pipe at wide open throttle