I have a 383 with tpi, 7165 ecm running 6e mask. Small roller cam and 10.5 to 1 comp. My blm at idle goes to 108, but my wbo2 reads lean. If I adjust maf table1 to get the blm in line the motor runs rough and the wb02 goes dead lean. If I bring the maf table back up the motor runs smooth but the blm tries to pull out fuel. Do I ignore the blm at idle? If I raise the min blm, would mileage suffer?

 

This won't address the sensor conflict, but should allow you to idle acceptably.

Raise the min pulse width limit values. This will reset the INT and prevent the ecm from pulling fuel below x.xx ms pulse width. Set the min values just high enough so it will idle smoothly and keep the plugs clean.

This method will still allow normal INT/BLM function at pulse widths above the limit values.

;==============================================
; FUEL OUTPUT PARAM'S
; calib = msec * 65.536
;
;==============================================
LC3AB: FDB 0104 ; 1.580 msec Min Base PW
LC3AD: FDB 0104 ; 1.580 msec Default Pulse Width

You may also need to disable the rich O2 Code 45 to avoid setting the SES lamp.

 

thanks for the reply. This makes good sense, but I am not seeing these min bpw limits. I am running 6e on tunerpro. I do have min enrich async pulse width. Is this the correct adjustment or is this for PE only? It is at 1.69 currently. I could also raise minimum allowable BLM. Would this do the same thing?