I FINALLY got around to changing the lift pump on my pickup to the piston style pump I bought at SOP (it IS hard to change it when the truck is 3 states away). Took it for a test drive, and the smoke went from (my guess based on past trucks) 30-35% to about 5%- just a haze at WOT. Gained a lot of bottom and mid range performance to boot. I would highly recommend the piston pump, even if you arent going all out in the BOMBing.
But that leaves the question of what happened to the smoke? I got to pondering, and came up with this idea: The new pump is getting all pressure and volume my VE can use at this time, allowing the IP to compound the pressure better and better atomze the fuel when it gets to the cylinder. Any better ideas?
Daniel