Yeah I agree with that regarding the differences in HP being slight once you get to a certain level. I've stayed with a Scooby WRX Sti from 20mph to about 110, (sorry, 70mph, officer

). It was pulling away, but only a few metres over about 1/4 mile! When we finally came to a halt (traffic lights) I pulled along side him, and he gave me a big smile, a nod and a thumbs up... before toasting me when the lights went to green......... (damn 4wd's

)
AC22 was from Ebay, but was sold as 'faulty'. I've since had it 're calibrated' at Race Tech's HQ, which is local to me