[jdmland]

Went from being tuned on 8psi, back to the 4.0 nose pulley, B18c
I'm at 6psi but on a basemap this time.
My a/f under wot is between 12.5-12.9 never touches 13.0
Any feedback would be great.

 

[veris]

I'd suggest richening it up to 12.0 to 12.5. If you go over 6psi richen further to 11.5-12.0 unless you have intercooling.

13.0-13.5 is recommended for NA applications only and you are on the edge of it.