You got the idea, geared up numerically speaking...
I've got tunerpro on another laptop and that's what I can use to tune the MEFI4 system with the 5.3. I can get live data for sure, but it's a giant pain in the arse. I got the software loaded to the laptop I use daily, but it will not connect to the ECM at all. I've played with port settings and the like and it will not connect. So I'm stuck using a dinosaur laptop running something like Windows 98 on it. Trying to get help from the tunerpro guy is very similar to talking to a brick wall. I think I'd get help from the brick wall sooner too.
I do have my own Tech1 GM scan tool though, it just doesn't work with the MEFI4 system.
Swapping for the sake of the fuel economy gains really won't pan out financially for sure. Mine was pretty simple as the truck came to me without an engine. Something had to go in there and I had a solid take out engine from a customer's truck. Stock top on though it was way better, power and fuel economy compared to a stock TBI 350 that should have been in mine. Hell, I could do burnouts pretty easy with the 35" tires. Now not so much with the added weight on the rear I've got way too much traction for it to spin.
If you get to CO, drop me a line. There are a couple of places in the state that go by Four Mile, but as areas that have Elk hunting, it's probably between Salida and Buena Vista or near Leadville. Both areas are only 2-3 hours from my home. Pretty country up there as I've done a lot of wheeling around there. Much this summer too.
Glad we could compare notes too. Always good to get the perspective. I've got another buddy in Denver with a 77K5 and a very original FWC camper. I mentioned him before in my thread here. He's in the process swapping out the carb'd 350 for an L29 Vortec 454 too. Again, it's an altitude thing. He's only gone out a couple times in his and that was enough to start looking for something better as his 350 was wheezing all the way up the hill.
I've got tunerpro on another laptop and that's what I can use to tune the MEFI4 system with the 5.3. I can get live data for sure, but it's a giant pain in the arse. I got the software loaded to the laptop I use daily, but it will not connect to the ECM at all. I've played with port settings and the like and it will not connect. So I'm stuck using a dinosaur laptop running something like Windows 98 on it. Trying to get help from the tunerpro guy is very similar to talking to a brick wall. I think I'd get help from the brick wall sooner too.
I do have my own Tech1 GM scan tool though, it just doesn't work with the MEFI4 system.
Swapping for the sake of the fuel economy gains really won't pan out financially for sure. Mine was pretty simple as the truck came to me without an engine. Something had to go in there and I had a solid take out engine from a customer's truck. Stock top on though it was way better, power and fuel economy compared to a stock TBI 350 that should have been in mine. Hell, I could do burnouts pretty easy with the 35" tires. Now not so much with the added weight on the rear I've got way too much traction for it to spin.
If you get to CO, drop me a line. There are a couple of places in the state that go by Four Mile, but as areas that have Elk hunting, it's probably between Salida and Buena Vista or near Leadville. Both areas are only 2-3 hours from my home. Pretty country up there as I've done a lot of wheeling around there. Much this summer too.
Glad we could compare notes too. Always good to get the perspective. I've got another buddy in Denver with a 77K5 and a very original FWC camper. I mentioned him before in my thread here. He's in the process swapping out the carb'd 350 for an L29 Vortec 454 too. Again, it's an altitude thing. He's only gone out a couple times in his and that was enough to start looking for something better as his 350 was wheezing all the way up the hill.