I had the MX port work done to mine with the same setup as you describe running on 110 race fuel and got 80hp with just over 40 ft lbs of torque. I miss her.
We cut down some T5 silencers and at the dunes it felt like it had more bottom end power but slowed it down on the top end. He started losing drag races that he was winning before. We switched them out for the stock length silencers and his top end was back.
I had my cheetah cylinders powdercoated and they ran a little hotter according to my temp gage then other peoples cheetah cylinders were running. This could have been caused by numerous things but I believe the PC had something to do with it.