Spent the past few weeks going through my truck and getting ahead of maintenance items (new battery cables, end links, leaf spring shackles, fluid, filters). Now to the fun stuff. Sitting in boxes on the kitchen table are a set of Infinite Performance SAC 7x.010’s, ARP 2000’s, Quad Adrenaline, Vulcan big line kit, and draw straw. I’m being offered a good deal on a Smedding 62/65/12 HX40. This is a tow/daily driver. I don’t need to tow 30,000lbs, but my goal is to make the truck tow within its designed limits better than it does now. Will this turbo hit the mark? And regarding the sac injectors, should I expect haze at idle? I’m ok with a light haze, but hoping it’s not obnoxiously smokey. My hx35 is fine for now, and I wasn’t really planning on a turbo upgrade, but the hx40 came to me so I’m considering it since I’m doing everything else.

You have the makings of 450-500hp in a tow rig with that turbo. I haven't personally had Weston's injectors but from what I've heard they are some of the best available.

 

Never heard of an HX40 being a 62/65/12, but Smedding does custom turbos so anything is possible. My brother runs that same size but as an SXE S362 and tows his flatbed gooseneck with his p24v truck. It cools well, spools well (could be faster with vp44 instead of p-pump) and we haven't had an issue with it. 

 

Weston's (Infinite's) injectors should run fairly clean. Idle haze maybe, but I'm not sure.