Also, I swapped a 97 t5 into a 97 glt, so they should both be a 4.3 motronic, and it sounds like most people go with a 98 t5 4.4 and run into issues, so I’m curious If using bot ‘97 4.3 would make a difference?

I will be sure to check the AC for cycling, and I’d never hold anyone on here accountable for their feedback. I’m just having a hard time understanding the computer aspect, and I would think if it was this easy to gain a little boost and HP without repercussion, more people would be doing it and tal...

I’m mechanically inclined, but my skill level and tool library is pretty novice when it comes to the 850. I was more well versed with my 240, but when it comes to computers and electronics, I kind of freeze. I love the little bit of added pep this ECU has given the GLT, but you’re probably right abo...

Thanks erikv11 -- I put the ECU in last weekend, and since there is so much traffic here all the time, I've not really been able to test it. What I have found is the AC does work, but I guess you're suggesting I just don't run it all the time? That may be an issue for two reasons (1. I'm always havi...

Has anyone put a 1997 850 t5 ecu into a 1997 850 glt and had good luck not prematurely ruining the engine/ turbo/ etc? I guess ultimately I’m wondering if it’s worth it, and if people have had experience doing this swap with the same year car and equipment and had feedback on it. Am I potentially fa...