Resetting the ecu is just disconnecting then reconnecting the battery isnt it? Because I have done that heaps of times, so it would have to be reset by now...

For example I find that if I shift into say 3rd gear at 3000rpm, it is really slow/unresponsive until it gets to around 2300rpm in 3rd...Like even if I floor it there is a loud noise coming from the intake but its not throaty and I cant feel the power until around 2300ish rpm