I installed my probe post turbo in the down pipe using the VM location mentioned by GDE some time ago. As I recall converting the given metric dimention it's 5.9" from the joint at the turbo and by my calculations that puts it right in the center of the 90 degree turn downward.
Normal driving without the trailer in 90+ weather with the AC on the EGT ranges from 400-600f
Two years in a row we have traveled towing our 3000-3500 pound 17' Casita trailer from Ohio over the West Virginia turnpike, a little of Virginia on I-77 then East across NC mostly on Rt 64 to the coast. The next leg was down the coast into Georgia and I-95 to the East coast of Florida around the Cape Canaveral area.
Then return to Ohio in a direct route.
I have the GDE full torque tune, "Euro" TC and new style front pump. I have both pre and post F37 TCM's and find the post F37 works better for towing expecially with the GDE FT tune. Total vehicle mileage is currently 55k miles. This year before our trip I installed the Hayden 2905 fan clutch and the 11 blade nylon MOPAR fan.
Last year (pre fan update) in 90 plus temperatures in northern NC going up hill trying to maintain a true (GPS) 65 MPH the EGT at one point quickly went to 1200f and the temperature guage got just past the 12 o'clock and I let off.
This year (post fan and fan clutch updates) the EGT never got above 900f and the engine temperature never got over 11:30 on the guage like it was glued there and a true 65 mph was a breeze up the same stretch of interstate:SOMBRERO:
I leave the engine running until the EGT gets down to 400f or less and that's no more then about 5 minutes when towing.
With stock size tires when my speedometer reads about 69 my GPS says 65mph
The new fan and clutch make far less noise and at first I was a tad concerned. However at a rest stop I raised the hood with the engine running and experience more air flow then I had ever observed. My concerns were put to rest
