E38 ecu, I've almost got my MAF dialed in after installing DW injectors... I just rebuilt the whole engine.. Stroker, overbored, bigger cam 228/230 @.050. Headers, full 3" stainless exhaust.. no cats.
While my WB is showing around 1 lambda, my narrowbands are reading 700-900 mv...
So when I go back to closed loop, the ecu pulls alot of fuel causing the engine to run lean.
The closest post I found to addressing this was about changing proportional base with headers to solve misfire issues.. but I dont think that would fix my issue.
Anybody have any ideas?