Fiddled with nistune....
Selling my ECU atm with the nistune board in it too... The changes we made we to radical for nistune,
Not happy with results. Tuner described it like trying to drive a car, with someone else doing the pedals
Full after market . its a Morris tech ecu.
As for the SR route. Mate has a super quick SSS, 230kw. I plan to match him , if possible.
My car gets the power down so much better than his... Im quicker of the line, he reels me in.. equal power id have him!