Open Loop Strategy?

What is the open loop strategy for a power logger system? Problem I’m having is that when I start it cold in it will start but die. So I throttle it to keep it alive. Runs like crap even into CL but if I shut the car off after it gets above 150 degrees, then restart, it idles good with the WB hanging around 13 – O/2 around 750 but if you stab it the O/2 bottoms out to ZERO – WB hits 22+.
Did a fuel flow and it was low so I got a Racetronix 255 with their HW. No difference.

So with that said why does idle change after warm only if I turn the car off and re-start it. Almost like a re-set. It shouldn’t.
Why am I running lean? Seems like I should change something in the tune but the first problem is in Open Loop and the second is it stays lean.

TPS is right .43-4.6 Coolant temp is reading right. New MAF “same as old MAF” Idle 5.+
It’s a new reman ECM. I think It’s a strategy of some sort. Chip/ECM/Tune. Any suggestions?

1986 Grand National WE2 - Stock bottom - Stock heads - Stock Turbo
6.1 TT / 60# FlowMatched Injectors.
Racetronix 255 with their HotWire
Accufab regulator
Innovate WB
Heated 0/2
3" THDP
RJC FMIC Mega IC-475
CAT Deleted.
3" Stainless Exhaust
All new Ignition
New MAF
 

EricM

Administrator
Staff member
The powerlogger is just a datalogger that displays ECM data. It has no control over fuel.

As far as the lean cold start, make a data log and lets take a look. Start recording at a cold start until it warms up. You can post the log here, or email it to me.
 
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