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Message: [QUOTE="Charles, post: 1310265, member: 103"] Up to a 100% nozzle I would say your power goal should be sub 300rwhp. If you intend to make more power than that and do it often efficiency would be higher with a 200. My 550 was running the exact same set of injectors that are in my crew cab now and they had nowhere near the towing power that they do now with the 200's. The turbo came over as well, so the setup is identical on another motor with 200's vs 100's. The part that hangs people up is that just because a nozzle CAN make up to xxxx horsepower, doesn't mean it's efficient doing it. Kind of like a turbo that can be pushed until flames are blowing out the discharge.... a larger turbo would run in the same setup and do it much cooler. I want to say that at low load my timing is around 10 (in the map) pretty much across the board until upward of 2500rpm, and as load increases it drops down to maybe 8 or so, again until around 2500 or so where it starts ramping up a bit. I haven't watched it on a scope to tell you what it [i]actually[/i] is, but I have the maximum capped at 28, which is totally tame. The cap acts on the actual timing, not the little number in the map. It includes all adders and offsets. I towed a little Cat 305 mini-ex and a little LS185 new holland today on a 25' dual tandem gooseneck and it pulls hard. Surges the piss out of the 38R though. It will stand up and pull hard at 1500 to 1600rpm in OD without smoking. At one point during the heat of the day I had a dramatic change in pulsewidth, as evidenced by the engine sounding muffled and me seeing smoke in the mirror. I need to get my temperature modifiers in check. Clearly I missed one.... That's why I generally hate temperature modifiers and wish they would all die. [/QUOTE]

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