Another Weird $42 .bin file ... what the heck $4A?

[dave w]

I'm helping someone locally with an '88 Suburban, Vortec Heads / RV Cam / 5.7 liter / 700R. So I build a chip, based on the remanufactured 1227747 ECM in the vehicle with AMUR 0055 lable on the chip, and I'm having issues with "Choke" programming. So I do some basic troubleshooting, and find the timing is set to 16 degrees BTDC. I decided to read the original chip, not expecting to find anything out of the ordinary, and find the Mask ID is $4A and the Initial SA Timing is set to 16.87. There are other settings that just don't make sense in the .bin I read from the chip also.

I'll reset the timing and see what happens next. Looks like my ride to / from work this week is an '88 Suburban.

dave w

[EagleMark]

I think you got a bad read of the chip. There's a lot wrong in there. Or just start with a AMUR bin.

[dave w]

I think you got a bad read of the chip. There's a lot wrong in there. Or just start with a AMUR bin.

I'll try reading the chip again ... good idea. I've already set up a starter AMUR, the choke is a problem for the moment.

dave w

[dave w]

Bad read. I'm thinking the adapter I made for the factory 2732 chip holder wasn't such a good idea.

dave w

[EagleMark]

I hate when that happens...