Hi

I have a problem with decreasing IQ fuel in 1.5dci ( delphi dcm ). I already installed kp39 turbo and it works great and try to have AFR 17:1, i increased torque limiters ( to 300Nm from 2500rpm), increased all fuel corrections map ( air temp, fuel temp, smoke map and so on) to 50mg. I also played SOI a bit and rail pressure and boost demand, DW , but as You can see i still have decreasing fuel ( column G ) from 2500rpm decreasing with IQ to 4000rpm.

As You can see in other limiters FUEL - columns from M to S it shows limit IQ>=50mg/str from 2500rpm.

What can limit my IQ from 2500rpm that it s decreasing ?