Initial_Candidate6

We’ve only sold a handful, no issues-yet. My FSE was in yesterday for a 6.2 that had an engine fire with like 500 miles on it. Long story lol. But anyways we got to talking and he was telling me he just swapped from hotline to FSE and that the 7.3’s are having some major growing pains, especially in the valvetrain.

Yes, updated IQA and cleared adaptations. I had returned to stock before tearing into it. Reprogrammed with tuner, after IQA and adaptations. Found that I had to change the aftermarket tune from the one it was on, as it seems that it may have had some adaptive strategies learned for the tune. Because when I swapped it to one of the other available tunes, it ran great. Thanks for the suggestions guys, that one just threw me for a loop.

Had a 6.7 2013 f250 170k miles SCR delete with SCT tuner. Came in with a slight misfire but went down the road well enough. Had P0269 for cyl 3 contribution. Verified cyl 3 miss on power balance about 10-15% of the time. Relative compression showed 0% change across the board. Manual compression while hot was 370-380 across bank 1. Replaced injector #3 following standard WSM procedure. No problems starting it after replacement took 3 key cycles and busted off. Truck has no ass now, takes a couple minutes to get to 60mph and won’t go any faster than 61-62. Sounds good on idle and with no load on engine up to WOT. But while driving it, it’s puffing black smoke (still has SCT hot street tune) and will ever so slowly get to 3500 at WOT and will hold the gear until you let off to shift. MAP is reading as expected when commanding wastegate. Now power balance is showing a slight dip (~10%) on #1 and a huge spike up on #3. The rest are relatively close to flat. passes low pressure and high pressure fuel system tests. Is it possible that the other 7 injectors are worn (or possibly contaminated) and number 3 is contributing that much more than the rest? Or am I missing the big picture here? Thanks in advance.