Im no fan of blocking the accumulators either nor do I prefer having to tune a car much to raise line pressure but every car is different and I like being able to tweak the shifts in the pcm. Transgo made the original Thrasher shift kit which was identical to what they offer now but had selective firmness levels, more spacers, and shims that go under the smaller springs on the acc pistons. That kit would make the tires bark on high settings. One nice thing about the pcm controlling shift firmness is that it will relearn part throttle to tame down the shifts more you drive it. After I build my transmissions sometimes the light and part throttle shifts are very harsh because of its mods but will learn quickly to this and make normally driving nice and have great WOT shifts. I never tried playin with adjusting the EPC on these transmissions and the solenoids that I have been using the last year arent adjustable like the OE delco ones because the adjustment screw is peened in so tight.
