I know I've ranted about this somewhere, but can't for the life of me find the topic.
Anyway, we're making progress on my father's truck. No aeromods, because he doesn't want "a truck that looks stupid."

I think I can get him to start posting his numbers though, and they're better than they've ever been, what with new tires and running at sidewall pressure. (Took a lot of convincing on my part to get him to part with door-sticker numbers, even though he replaced the PASSENGER tires with TRUCK tires).
But one thing I noticed is just how pig-rich it's running. When I go to shift, the engine stays revved for a while, and it can take literally 3 seconds to drop to the RPM required by the next gear. Not good.
Is there ANYTHING out there that programs GM ECMs? Preferably without the licensing garbage, as my father also has a Bravada, and my mother a Blazer... And did I mention cheap?
