Quote Originally Posted by flattopwill View Post
I jus...
I am afraid Allen forgot to tune it for flex fuel injectors....
That truck will not run right and without a maf? It's maf tuned, it needs a maf to run, hence the failed maf code.

I didn't forget to tune for anything, even the injectors, the info you supplied is already setup for flex fuel injectors, the Z vin.

Until you get some exhaust on that truck, those o2's are never gonna read correctly and make the truck run like crap. O2's don't work well so close to the open collector.

looks like you're getting closer.