some results.
i put the pyrometer probe about 5 inches from the turbo, which is as close as to the turbo as i could get the welder in to weld the collar on the pipe.
it works great. wally and i drove to texas together and our pyro temps compared very closely. on a straight and level road with low boost, it was about 350-400 degrees. going up a moderate grade it would go up to 700 degrees or a little more. very close to what wally saw as we compared on the CB as we were driving for several days. so i am please with the results. what i never rembered to do was to shoot the temps with the IR temp gun to see pre and post turbo temps. i will try to remember to do that yet.
tom
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