PwrSmoke
Full Access Member
If you get black smoke on a hard pull, and EGT goes up to about 1100 fairly quickly on a hill, the pump has been tweaked. Light smoke and low EGTs, it might be set low (the Banks "emissions legal" setting) or still at NA trim. Adjusting the pump was part of the installation process and outlined in the instructions. You're sure it's wastegated? From your initial post the boost performance sounds more typical of a non-wastegated. The Sidewinder came both ways early on, later only as wastegated. IMO all that's needed is a 3-inch system, which is what Banks supplied. That's what my Banks equipped truck had most of it's life and when I installed a 4-inch system, no noticeable difference in performance. A 3-inch system is cheap to do. Four inches is getting there. You won't find much of anything ready made. It will be custom or adapted. Banks still has some of the systems available but... yowza! the cost. 10-15 psi is normal boost (generally at the lower end) and all the engine can stand. Mine has seen 14 psi a few times. I wouldn't sweat the number. If you can get the pump to supply the appropriate amount of fuel for that amount of air, the engine will be delivering about all it can practically do without other mods. Other mods? ... head studs. High boost and fuel rates = blown head gaskets. You'll hear about the Moose pumps and they are one of the better performance investments behind a turbo... but I'd put head studs ahead of that for durability's sake.

