i would think that it would all depend on the tune of the Nistune mate....as its a chip that goes on the board it will all end up depending on the tune.....and as i have never seen a nistune at work etc i cant really comment on the nistune...
Might be able to lend it to you marko.....but will be needing them back mate....you will however need the front cover of the ecu....also have a afm that you can borrow as well mate