Just wanted to share my success. I don't have any marvelous dyno numbers at the moment (to be had soon!) but what I do have is hard proof in the pudding that EFI is king of tuning the 5.9L CR. On my 06 MegaCab I have a measly box stock BW S363,T-4 2nd gen PDI manifold that I port-matched, 45% injectors, Arson 3 minus the FCA, and a built tranny. Currently I have been working with SilverBullet Tuning (Les Szmidt) to hammer out the tuning. I have been all smiles! I've had a bit of a curveball thrown at me because I didn't want that large of an injector (120's to 150's) paired with my choice of turbo. Nothing custom tuning can't handle! So far, I'm smoke free, spools like stock, drives like a grocery getter while DD'ing and while driving in inclement weather, but runs like a scalded dog up top! It's hard to imagine my turbo spooling like stock and smoke free with larger injectors for it, but it does and flows so much air up top with that huge 16cm turbine housing!
Now to the good stuff....My motto has always been, get it done for less or go home! Not in the sense in sacrificing reliability, but I don't go buying parts based off price or advertised hp etc... Just recently I've had my sights set on a particular local truck that cruises around as the BIG DOG of the town..07 5.9L, Quad cab, short bed, G56 with SB DD 3600, Smarty, 75% CP3, 60% over injectors, SilverBullet turbo (66) T-3 HTT stainless manifold, valve springs and push rods, and a few other nic-nacs that have made 620 hp on Dunbar's dyno recently. Staging while cruising 60-70mph on the interstate I let him know just who the NEW big dog is now!! While at a pit stop on our journey, I asked him and his fellow passengers that are Cummins owners as well, what kinda smoke output were they seeing out of mine since I had been ironing out a boost fuel limiter table. Very swiftly they replied, "None, Clean, Very clean!" at that moment, is was like the world stop turning and I knew, I had accomplished what I set out to achieve. What a great feeling that was!! Just wanted to say thank you to Les for his hard work and patience putting up with me, the EFILive crew for making this possible, and the rest of the BETA testers, and friends that have listened to me ramble on.