Originally Posted by
Karlos G
With a rolling road and a wideband lambda..... thats why a local grease monkey cant do it

You can do it on the road but need somewhere you can get up to around 90mph (or whatever RS's do in 3rd @ 6400rpm), a laptop, a WBO2, and have to pull over to make adjustments every time!
on mfi? isn't that for efi setup where you can adjust the fueling and ignition.
Never had tuners use wideband to setup my rst and not had a problem with any of them.