BLM's go down in Park, but back up when idling in Drive???

[FJM568]

My BLM's go down to 105 while in Park idling closed loop, but when in Drive, idling, they go up to around the mid 1-teens, closed loop...Using DirectScan...Highway driving, cell 15 is right where it should be, around 128, generally within 5 of there...

This is a Lubrant street chip for 50's...Anyone have any ideas on this??? Is this normal???

 

[TurboJim]

Perfectly normal. The ECM has learned that the car need a little more fuel when dumped in gear, as compared to idling. Since none of the values are at their extremes, I wouldnt worry about it. You may just drop your FP 2-3 psi, to bring the BLM's up 5-10 numbers.

 

[FJM568]

Tanks, Jim...

And nope, I meant it just like it's spelled!!!

Whew!!! Good news for once!!!

Should I maybe just tweak the Translator on the idle setting to bring the numbers in, or would that screw with the cell 15 while cruising setting, too, if I did that???

 

[Eric Stage I]

105 is bottomed out. If you adjust the Translators idle setting to a leaner setting, the idle blm (cell 0) should come up so the ecm is back in control. Just adjust it enough to come up off 105. It shouldn't effect cruise.