EGT Probe Placement

I set up my TRX with the probe 6 3/4" from the face of the piston and dialed in the jetting from there. Since the time I set mine up I've had many TRX owners put their probe in the same location with comparable results. The Banshee seems to read a little cooler at that distance so it may be best to move the probes a little further away from the piston to get a more accurate reading - I like 7 1/2" to 8" on that engine. These silly-semi-supercharged two strokes spit so much fresh, cool mixture out the exhaust during the pipes suction phase it cools the probes - to the tune of about fifty to seventy five degrees for every inch it is placed closer to the piston. There seems to be a kind of "sweet spot" that can be noticed if attention is paid to the color of the exhaust pipe(s). Sometimes there's an area on the head pipe where it shows some discoloration from the engines exhaust heat - where that starts would be a bit too far down the pipe to locate the probe.