Post by
float_6969 »
https://forums.nicoclub.com/float-6969-u780.html
Fri Jan 08, 2016 7:47 am
OK, after re-reading this, I'm confused about something. You put it back to stock, but you have Nistune still installed. Do you have a completely stock, untouched ECU you can put back on there? You haven't really eliminated all of the variables if you still have Nistune installed on an ECU, even if it's a stock tune.
Also, it sounds like at some point you were running a stock MAFS and injectors on a Nistune tuned for a N62 and 440's. If so, that would easily explain the rich down low, and lean up high issue.