04-04-2012, 09:20 PM
Compression Ignition Addict
Join Date: Jan 2009
Location: Vegas/WA DC
Thanked 55 Times in 51 Posts
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bigger towing "delta" after EGR delete
Guys, sanity check my logic below. I am seeing higher towing delta after EGR delete, but I think that makes sense:
I just did studs, NEW OIL COOLER, all the std updates like sct/turbo lines/standpipes. I added a banks IC and ducting, and Gogo EGR delete/intake, that totally removes all EGR stuff and cooler.
I did add a custom "studded" towing tune that runs hotter no doubt, but what I am seeing is a higher delta than normal
before my oil temps and water not towing were about 10 degree difference and towing about 15-20.
Now not towing is about 7 deg diff, and 20-25 diff towing.
This seems weird but does it not make since that the water is not being mixed with the exhaust anymore that it would make since the ECT would be 5-10 lower?
Just checking my math. I was towing up hill and headwinds like a madman this weekend, testing my new engine. Towing harder, hotter, and faster then normal, but I did throw a wrench light twice for delta. Both times it was when i was running the sh%#z out of here and she was getting hot, but developed a 20-25 delta and the coolant temps just didnt keep up.
For example, from a dead stop after idling my ECT and EOT would be within 10. Then if I just dropped the hammer and charged up a long climb in the mountains, the EOT would rise a quick, and visible rate on the gauge, the ECT rises too, just not quite as quick, it catches up, but during those hard acceleration tests uphill, when the EOT got out front by about 25 degrees, it threw the wrench light. No loss of power, resets with key cycle. Anyway, thoughts?
thanks as always for the sanity check.