1990 k5 blazer ?

[Rally Smith]

I'm looking at getting this blazer. Owner says it has vortec engine in it with factory tbi setup. Anybody have info on chip and ECM type? It's like 250 miles one way, so if anyone has a tune they could send me that would be great. I have an auto prom so I can burn chips. Any insight or info would be greatly appreciated.

Rick

[EagleMark]

1990 Blazer should be 1227747 $42 which would need some tuning to run Vortec engine.

[Rally Smith]

Great, thanks for the info Mark.

[Rally Smith]

Hey Mark, I found the thread with all of the bins you have there. I'm not sure which bin I need. Any suggestions on which I should use?

Thanks,

Rick

[EagleMark]

ASDU for auto and ASDX for manual.

[Rally Smith]

Thanks man.