BLW: I'll conceed that one to you. Yeah for the purpose for which it is designed it's pretty good.

Protop: The TPS cannot be beat for a beginner. (with one caveat).

There is no setup involved, no tuning, etc. Mine started up tuned very well the first try out of the box.

The TT .46 needs initial setup, even though there is nothing wrong with it.


The caveat with the TPS, is the #$%* "walking" low speed limiter for the idle mixture. This needs fixing by Evolution.

If the "walking" low speed mixture valve is prevented from moving, most TPS's will go from box to being in the air w/o any required additional tuning... there are some that are poorly tuned from the factory, but of late these have been fewer and farther between.