Noticeably more responsive with the throttle body installed. Feels like it breaths just a bit better really.
Finally took the plunge and had it tuned last week at East Coast Customs ..... wanted to bring all the mods I've added over the last 2 years together.
And, WOW, picked up 30 rwkw and about 50NM from where it was before the tune. Really can feel that extra grunt now. Incidentally the mods so far pre-tune meant it was about 15rwkw up on a stock 17 GT Manual. So all up, means I've added about 45rwkw from stock now. Really happy and the only thing left to do (engine wise at least) are new headers and a re-tune.