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Message: [QUOTE="nighthawk285, post: 1376852, member: 13975"] The turbo was actually in for a solid two weeks with the stock injectors before I got around to installing the injectors. All of my tunes were already written for an S2 with stock sticks, and I was curious how it would run. All I could do was smile like a Cheshire Cat; it was the most fun turbo I've had since the 1st gen 1.5. Even on stock injectors, the spool was really fast and it would more than keep up with the stock system. For a size apples-to-apples comparison that usually happens, I have driven other people's rigs with billet wheeled PMAX's and they've got nothing on this S2. At WOT, I absolutely could not get the EGTs above 1450 on my hottest tune. Before hand, even with the other air upgrades, WOT would start at about 1500, and after about a mile, the EGTs would climb back up to around 1650-1750. With the stock injectors, I could hold it wide open and the temps would just stay planted. Boost would max out about 35psi. In the 2 weeks I had that combination, I put on about 1600 miles of commuting, stop-and-go, some light towing, and a road trip for Mother's Day. I never did any fuel mileage comparisons, but I couldn't keep my foot out of it either. From now on, this will be my recommended turbo for anyone that likes to have some spirited driving now and then, still tow max weight, and wants to keep the door open for upgrades later. The Sunday night of Mother's Day weekend after we returned home, my wife went to work and I dove in to get the injectors done. Started about 7pm after my daughter went to bed, and was up and running again by 1130pm. I had bought a couple new tools that made the job much easier (1/4" locking flex head ratchet ) and everything went smoothly. The next day I loaded up my revised tunes and went to work. I was very impressed at the bottom end performance, but the truck would just fall on it's face and wouldn't pull any harder over 1/2 throttle. I had also put on a BOV within the same time frame, so I spent a couple days troubleshooting thinking that I had done something to the APP sensor and messed it up and then it hit me to check fuel pressure....sure enough, it wouldn't hold even 20psi during a longer pull at half, or anything at WOT. So note to the next guy, 205s will NOT be supported on stock fuel. I knew this already and was gathering parts for a 6.7 swap, but with fresh injectors in there I needed a solution ASAP. So a couple days later for shipping, I had a new AD2 pump at my door. I put that in last Friday night, installed my RR I had sitting on the shelf on Saturday, re-loaded up the full fuel tunes, and went to go sled pulling 100 miles away in Ontario, OR. Had to keep getting in-and-out of the throttle to keep the front end from hopping in this one [url]https://youtu.be/6koNHYP0-5M[/url] Front end was strapped down and this was a stronger almost WOT run [url]https://youtu.be/0H-uxKd7g6c[/url] The truck has done beautifully ever since. Power is on tap when I want it, and smoke is very minimal. Spool up is quick enough that I can drive the truck like I always have and be aggressive into the throttle down low without fear of smoking out an intersection or highway when passing. Unless I go right to about 75% throttle or more, there's no smoke to be seen down low. Cruising EGTs are right around 800deg, and I now have to re-train my foot to use the top inch of the pedal, otherwise I look down and I'm doing 80mph like it's nothing. I knew I'd be pushing the limits of the S2 with 205s during WOT runs and I am. HOWEVER.......that brings me to NOTE #2.....205 conventionals will NOT hold ICP on an otherwise healthy system on a full fuel tune. This is a question I never saw fully answered when doing my injector research, as folks would post "Yeah I can hold full ICP" and then two threads later post up "I think my HPOP is dying." On my reduced fuel DD tune from ********, I can support 2.2ms of PW and keep 4.5v ICP.....on my full fuel tune that's supposed to be at 2.5-2.6ms, I drop to 3.6v ICP. With the drop in ICP, the computer tries to compensate by extending PW and I end up right around 2.74ms PW and 3.5v ICP at WOT. Unfortunately that much fuel and poor ICP for atomization leads to a lot of heat and a bit of smoke. I bounced the pyro off of 1850deg a couple times before I stopped doing that. Since there's no good options IMO for high performance, reliable 05+ HPOPs, that'll be something I'll just have to watch when running a full fuel tune and probably manipulate the PW a bit more to find out how much I can give it without losing ICP. Boost on the turbo now with the bigger injectors for better drive pressure max out around 37psi on most tunes, 42-45 on my full race tune. This has gone on for longer than I intended, but I wanted to share the full story and give all the info I can for a solid review. The bottom line is that I'm very happy with this combination, and have been nothing but impressed with the S2 turbo, both with stock injectors and with bigger ones. [/QUOTE]