Well I went ahead and loaded 307b to my ECM. Everything seems to be working well. I tried the 30, 60, and 90 horse programs all with timing. I had my EZ unplugged. Power felt good !! The only time I could get any real smoke was when in 5th ( NV4500 ) and let boost drop to 0 and then go about 3/4 throttle, but it cleared up quick.
The only thing that I am wondering about is the FASS, it runs for much longer after I made my first update to the ECM, wonder why? Is there any problem with starting the truck while the FASS is running. Cause usually by the time the wait to start light has gone out the FASS or LP has stopped.
Jeff