Here is my dyno results, blue is standard Triumph map, red is map created on dyno machine. Mods: straight through exhaust cans with cross over, standard header, k&n under seat filter. pops a little on deceleration as expected, but not too bad. Noticeable improvement in driveability ...
Interesting, I have the same straight through exhaust (TORS), with free flowing crossover, but I have Ram Air and obtained 144.8 HP, 159 TQ. Thanks for posting