Originally Posted by Prospec

Tuning query:

I was running in my P5 last night, Byron 20% / 9901 pipe / 6mm Venturi.

Run in/progress so far:
first tank ran up to temp 3 times
3 further tanks - figure of 8's 1/4-1/2 throttle cooling between
3 further tanks - rich, running a circuit with full gas

Q. I've gone through quarter of a gallon, at idle slightly high tickover which slightly drops, after 10 seconds punches of the line clean plenty of smoke, maybe a slight hesitation/bog... Flat out sounds good, reving high slight trail of smoke - all seems good but the engine temps are way down 65c/165f which leads me to believe something's way out with the tuning?