Well I was playing around with this sort of thing not too long ago and ended up with right at 1000ft/lbs at 3400. I'm going back to give it another whirl when I get my nerve back up. It should help a lot that I'll actually remove the 3800rpm rev limiter this time. I never scoped over 2ms last time.... couldn't figure out why...
I fail to see what you're asking exactly? So I'll just explain my statement. I left the rev limiter in place at 3800rpm. So my pw was never above 2ms at the 3600rpm I froze the scope frame at each time. I had started the dyno session by removing a lot of fuel across the board. I then started playing with timing above 3300rpm (where cylinder pressure is falling fast) and worked to locate the "sweet spot" at a reduced fuel/power level. It was at 2ms that I started this. The truck made just over 600rwhp and I began working the top end. It was at a scoped 2ms that it still produced 644rwhp at 3400 with the timing more dialed in up top. I made absolutely no changes to timing below 3350rpm as it was already working well there. I then started to work the fuel back in past 3400rpm but wasn't showing any power fluctuations, nor showing any more pw on the scope. Still exactly 2ms. It was just past 9:00 at this point and time to call it quits anyway. It wasn't until that Sunday that I had a :doh: moment, and remembered my limiter having been set at 3800rpm.
So that was what I was talking about in the post of mine you quoted. I fail to see how leaving the rev limiter in and it keeping me from exceeding 2ms at the rpm I was working with has anything at all to do with a pw/rpm combination that is unatainable, if in fact that is what this thread is being made in reference to.
I simply plan to get 2.5 or so ms at 3600rpm now without the limiter cutting it off early. But 2.5 at 3600rpm is not an unattainable combination.
I have not "Found something" with respect to the pw/rpm stuff in about 3 years. So I wouldn't hold my breath on that if I were you.
However. Since you prodded the nearly cold embers and stoked the fire here. Why don't you show us something about how you all apparently did/are exceeding the limitations of the com protocol. Since you all are the only ones "Finding" new things each day. Show us something other than hearsay and videos of your truck running better, yet still probably 100+hp off of mine at the rpm range in question.
Since you seem to have started a nice SA thread here. I won't hold my breath waiting on your scope shots.
Fuel per time. Increase that and secure a PSD's right as a competitive vehicle.
Nothing new there.... same thing I have been saying since 2006. Only I am a bit more educated about the issues keeping us from injecting fuel fast enough and am injecting fuel WAY faster than I was in 2006. I have picked up quite a bit more fuel per time for 2009 as well just doing some common sense stuff to the injectors. Combine that with some more tuning and some better air and it'll be a good day at the track. Not sure what else you want to know.
Near as I can tell, Kevin still feels that what he is doing in beyond our understanding of the components involved, and assumes that one day we will "find" something, and finally rise to his current level of code manipulation. Or, at least that of his tuner.
If I am horribly wrong here, help me out.
Yeh Charles If I were you I wouldn't hold my breath. If you can't be civil about this it doesn't matter anyway.
Forgive me for incorrectly viewing this thread as having been created with a SA attitude in mind. And forgive me for not remaining "civil" (I guess I don't know what that means if my actions in this thread are deemed something other than civil) while you assert things that those from all camps informed on the com link have shown time and time again as being impossible, given our own data and experience. To operate outside this understood limitation is fine, however logical explanation is required, and you refuse to verify your assertions in light of the comments made by numerous individuals knowledgeable in the area in question that disagree with your findings.
Define uncivilized? Civility would require you to support your assertions in an acceptable manner. Or at least make the effort to do so (verifying your findings with an oscilloscope would fulfill this).
On Edit:
Your thread title is in all caps. Is that not understood to mean a heightened tone of voice, if not shouting in a forum environment?
Charles you were doing good till you got to the part below SA. I don't really care if you like me or not, it was only a question. Thank you for responding though. What I was looking for "is" in the intelligent part of you answer.
However. Since you prodded the nearly cold embers and stoked the fire here. Why don't you show us something about how you all apparently did/are exceeding the limitations of the com protocol. Since you all are the only ones "Finding" new things each day. Show us something other than hearsay and videos of your truck running better, yet still probably 100+hp off of mine at the rpm range in question.
Since you seem to have started a nice SA thread here. I won't hold my breath waiting on your scope shots.
There was nothing meant by me to set you off. I read into something a little too deep and had a question. The other thread was on track and I wanted to leave it that way.
Yeh Charles If I were you I wouldn't hold my breath. If you can't be civil about this it doesn't matter anyway.
So what is it your are looking to get from Charles or Jason? Are you not happy w/ the way you have gotten around the RPM/PW issue and want a different route or what?
I would have to say that if Charles did 644 w/ the hybrids/nozzel combo he has then I'd say he is on the right track and tweaking will get him over 700 and the peak will be in a higher RPM than most.
I really wasn't looking for anything in particular and I'm pleased with the 235 hybrids and tuning that I have. Like I said I mistook their statements and thought something else.
It's not uncommon for guys to drop hints around for others to find.
Yep..... 250cc in in 2ms is enough fuel to make some good power up top.... oh and my post was about the factory rev limiter that is usualy at 3600 rpms. Probably what Jody bumped up on your truck Kevin (IE the reason the pulsewidth was dropping to nothing at 3600) that he found upon review of your tune. Just a WAG.
I use an older version of Bill's stuff. PHP tune. It is now what he sells as Minotaur (sp?).
Check his site for 7.3L tuning software and you will see it. I have Sniper that I will sell you dirt cheap if you're looking. It is precisely the same software, it's just encrypted for their stuff. If you want the software I have a fresh EULA and you can get anything else, like a burner or chip and such from a site vendor, like Lott.
Otherwise, check out Bill's site. Power Hungry Performance
To the best of my knowledge, my oil side is STOCK!
I might puke if I have to hear "SHO" one more time. I don't have any stupid extra holes or any retardation of the sort going on with my injectors.
:hehe:
Oh, and heaven forbid a man takes his tuning into his own hands and does it exactly how he wants it, when he wants it. No matter how masterful your tuner is, they are not you. And they do not ride in your truck everyday. You do. Plus the highly subjective nature of tuning in the first place dictates that the one needing the tuning should probably be the one doing it.
There isn't much room for error and it takes careful planning to approach it correctly when the injection rate is very fast. There's a big difference in tuning required when you are emptying injectors in half the time as a standard hybrid....
Faster rates and good control are what it takes. The same is true for every diesel engine that someone is trying to tune. I have heard from one of your customers that they were impressed with your capabilities. Sounds like you have a real good understanding on how to control these things and look foward to seeing some impressive results from your tuning.
I'm personally looking forward to the day we start tuning, using crank angle degrees.
I think that day will be sooner than later
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