Higher PM3 Setting = Lower EGT !
Steve, and everyone else following this thread, Found that higher setting on my TST PM3 actually gives slower & lower EGT's!
Seems a little counter intuitive but with the B-1 compressor, there is a certain logic to it also.
I drove from Dallas to L. A. last week, at 9200 lb. with strong headwinds. Started getting rapid compressor cough ("Waf-Waf-Waf) when accelerating from 60 - 80 mph in OD. Because of large amount of air B-1 is suppose to put out, thought it might be turbo air backing up. Switched from 5 to 7 setting and on next hill, no back pressure noise and EGT's leveled off at 1250 as soon as boost got to about 40 psi. Worked even better on #8 & #9.
My guess is more fueling at lower rpm spools turbo sooner and quicker, resulting in - more air, better balanced F/A Ratio, and therefore more controllable EGT's? Maybe just learning to drive it better - hitting the throttle a little harder, bringing turbo up sooner? Don't know the why but sure like results.
For whatever reason, higher setting works better on my setup and the added power is lots of fun. Finally got this beast exactly where I want it - plenty of power and a street driving dream!