Correct I have the 1227747 ECM. We're just gonna have to wing it and burn multiple chips if necessary. I can't justify the cost of the APU1 system for this project. What is strange is that the...

I understand. What I'm wondering is if we can tune the truck with just the WB, or if the APU1 system is needed to capture the WB data for re-burning. I would like to try to tune with just the WB.

I ordered a WBO2 yesterday. Will the datalogging component you referenced above be required to reburn the chip (if necessary) once I get the WB hooked up? I can't justify the cost of the logging...

Thanks for the recommendation. If I hook this up, can it be incorporated into Tuner Pro datalogging? If so, how is this done?

Is there a specific WBO2 you recommend?

In addition, I've rebuilt the TBI and the system has both knock and EGR removed and de-programmed from the chip.

I have completed the TBI conversion and have my rig running almost where I want it. My symptoms are as follows. I have an unidentified stumble off idle that sometimes extends to the 1-2k RPM range....