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Old 05-15-2010, 12:44 PM   #11
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Re: Specs and tweaking a t444e?

Hey JeffD2u,

Since the Kenworth place where your bus is says they can put a break-in box on it to get the settings, you should let 'em do it and document the results. Then maybe you could ask International what the "original factory settings" "should" be. It won't get it dialed in (if it HAS to be done by an Int. computer), but it may give you some indication of "what" is "how far" out. Then Int. may be able to offer insight on what would be required to dial it back in. (Hope this makes sense...)

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Old 05-16-2010, 09:40 PM   #12
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Re: Specs and tweaking a t444e?

It occurs to me that you may be able to use my described situation to your advantage...

I don't know what International's regulations are or if any sate/federal laws apply, but perhaps International has a similar requirement to bring vehicles brought in for service back to factory spec. If you took yours in, they may be required by law to bring it back to its original specifications.

IDK, just a thought...
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Old 05-17-2010, 12:13 AM   #13
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Re: Specs and tweaking a t444e?

Well, I picked up the bus from the Kenworth shop. They tried several times but could not communicate with the ECM.
I think I'll head to the Int. dealer.
Upon further internet research I have seen the name Pro-Link mentioned. Am I correct in assuming if I find a place (International or other) that has a Pro-Link with Navistar software that they can check the settings and adjust if necessary?
Is that what you had in mind, Griff?

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Old 05-17-2010, 06:22 AM   #14
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Re: Specs and tweaking a t444e?

Quote:
Originally Posted by JeffD2u
...Am I correct in assuming if I find a place (International or other) that has a Pro-Link with Navistar software...
...not sure about this...didn't do the research...
Quote:
...that they can check the settings and adjust if necessary? Is that what you had in mind, Griff?...
Essentially, yes.
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Old 05-25-2010, 06:03 PM   #15
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Re: Specs and tweaking a t444e?

Well, after more research I went to another place where the guys seemed pretty confident they could change settings IF the ECM had no password protection. It requires a passcode.... They tried "0000" which I guess is common. No dice.
So it looks like my option is to have the chip "reflashed". Only the dealer can do this. So it comes down to spending $105 to see if they can do it. If. Should I bother?
Will my wife and children ever accept a bus as a member of the family?

Thanks for your help so far!
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Old 05-25-2010, 10:18 PM   #16
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Re: Specs and tweaking a t444e?

Quote:
Originally Posted by JeffD2u
...So it looks like my option is to have the chip "reflashed". Only the dealer can do this. So it comes down to spending $105 to see if they can do it. If. Should I bother?
Even if it only gets you an additional 1/2 mile per gallon, it'll pay for itself long-term.

Personally I'd do it, since you don't know exactly what was "detuned" or the method used to "detune" it, it may be having potentially detrimental effects to the engine that you could find out about the hard way later on...Just my $.02, YMMV.
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Old 05-27-2010, 08:42 PM   #17
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Re: Specs and tweaking a t444e?

I took the bus to the Int. dealer where they looked at it right away while I waited. Eventually four guys were on it.
Turns out there's an electrical problem with the data link port itself, so they (like the others) were unable to communicate with the ECM at all. The laptop screen kept going blank. The main tech said it could get pretty expensive for them to track down the problem. Time for me to break out the multimeter.... While I was there I asked him what he thought about those aftermarket chips to bump the hp just a little. He thought a modest increase wouldn't do too much harm, and that it was an easy plug-in DIY project. Maybe it's worth a couple hundred invested rather than pay an unknown amount for an electrical bug. Later, I remembered that this wouldn't address the top speed issue. I might try it anyway.
They also printed out a lineset ticket. Turns out my bus has a 339 rear (!) The Int. guys were surprised. They said buses normally had a ratio in the 5's. Guess that's a partial explanation for the cruiseship-like acceleration. The trans is an AT542 . 2500rpm governed speed. All this info for $39! They didn't want to charge me for the full hour. I didn't have to cry or anything! Not that I do that.....
So, that's where it stands for now.
What do you think?
I'm going back to scraping decals...
Thanks for the help thus far!
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Old 05-27-2010, 10:21 PM   #18
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Re: Specs and tweaking a t444e?

Quote:
Originally Posted by JeffD2u
I took the bus to the Int. dealer where they looked at it right away while I waited. Eventually four guys were on it.
Turns out there's an electrical problem with the data link port itself, so they (like the others) were unable to communicate with the ECM at all. The laptop screen kept going blank. The main tech said it could get pretty expensive for them to track down the problem. Time for me to break out the multimeter.... While I was there I asked him what he thought about those aftermarket chips to bump the hp just a little. He thought a modest increase wouldn't do too much harm, and that it was an easy plug-in DIY project. Maybe it's worth a couple hundred invested rather than pay an unknown amount for an electrical bug. Later, I remembered that this wouldn't address the top speed issue. I might try it anyway.
They also printed out a lineset ticket. Turns out my bus has a 339 rear (!) The Int. guys were surprised. They said buses normally had a ratio in the 5's. Guess that's a partial explanation for the cruiseship-like acceleration. The trans is an AT542 . 2500rpm governed speed. All this info for $39! They didn't want to charge me for the full hour. I didn't have to cry or anything! Not that I do that.....
So, that's where it stands for now.
What do you think?
I'm going back to scraping decals...
Thanks for the help thus far!

Good job. When I chipped my diesel Excursion, it raised the speed governor as well as a bunch of other stuff. I know that my computer is probably different than yours but I am sure it can be done. The difference was like night and day.
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Old 02-27-2017, 12:10 PM   #19
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Quote:
Originally Posted by JeffD2u View Post
I took the bus to the Int. dealer where they looked at it right away while I waited. Eventually four guys were on it.
Turns out there's an electrical problem with the data link port itself, so they (like the others) were unable to communicate with the ECM at all. The laptop screen kept going blank. The main tech said it could get pretty expensive for them to track down the problem. Time for me to break out the multimeter.... While I was there I asked him what he thought about those aftermarket chips to bump the hp just a little. He thought a modest increase wouldn't do too much harm, and that it was an easy plug-in DIY project. Maybe it's worth a couple hundred invested rather than pay an unknown amount for an electrical bug. Later, I remembered that this wouldn't address the top speed issue. I might try it anyway.
They also printed out a lineset ticket. Turns out my bus has a 339 rear (!) The Int. guys were surprised. They said buses normally had a ratio in the 5's. Guess that's a partial explanation for the cruiseship-like acceleration. The trans is an AT542 . 2500rpm governed speed. All this info for $39! They didn't want to charge me for the full hour. I didn't have to cry or anything! Not that I do that.....
So, that's where it stands for now.
What do you think?
I'm going back to scraping decals...
Thanks for the help thus far!

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