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  1. T

    TCM Tuning .... again

    Yes, this would only be for unloaded conditions (20-30% TPS). I guess my only concern is can a stock allison take short shifting? I mean, all I am asking it to do is shift the actual speed that is programed into the TCM. Unless, the Allison guys have already out thought me, and have the...
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    TCM Tuning .... again

    Actually, I really still do have the stock small tires (245's) on the truck. I am looking at going the tall single route for my next set (235/85R16). But it sounds like yes, the TCM is reading a different speed than what I am actually going. Soooooo, the big question is if I adjust the...
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    TCM Tuning .... again

    Don't know if this is an old question, but my TCM tuning has to deal with the part throttle shifting. I've noticed that for my truck, (stock '04, LB7 with stock Allison 5 spd), that the part throttle shift points don't match up with what EFI Live shows. Basically, the truck will shift at a...
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    Weels/tires for best milage?

    Anyone running dually tires as singles???? I keep throwing around putting on some 235/85 R 16's on my CCSB to get a slightly taller tire on there. I'm trying to reduce engine RPM at ~70 MPH to get some mileage back. For me, drivng mixed (town / country) at ~60 MPH equates to ~21 MPH. Get out...
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    Rail pressure

    Don't mean to hi-jack this thread, but I just started playing with increased fuel pressure to try and get another 1-2 MPG out of my LB7 (occurred to me after looking at stock LB7 / LLY and LBZ tables). Were you able to increase timing with the higher fuel pressure, or was it a matter of better...
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    EFILive Beta:

    Pat or anyone else, Not sure it makes much difference, but were these total reflashes, or just calibration flashes? I'm using the DSP5 on my lb7 so I am doing full reflashes each time. I figure they either have it working or it doesn't. As for BBL, a couple guys were saying that it was...
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    EFILive Beta:

    Anyone heard / tried the latest (a few weeks ago that is) beta for the BBL yet? I know Pat said he has it loaded on his beta laptop ... just wondering if it is safe enough to try yet. From reading the EFI Live forums, it sounds like the diesel stuff kinda works now.
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    EFILive Beta:

    The key thing I'm looking for is someone else who has 1) successfully flashed an LB7 and 2) successfully BB logged an LB7. I figure as soon as that has been worked out, then I'll give it a try. Otherwise, its me and V7.4. Hopefully, they will post the diesel fixes (any BB logging and the...
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    EFILive Beta:

    From reading the EFI Forum, none of the diesel stuff works yet. LB7 or LLY. On another scarier note, apparently, if you try to flash an LMM it will toast the ECM. There is a big warning about dont even try an LMM with it yet.
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    Custom desert buggy..

    What are you using for computer? ECM / BCM out of truck?? or ECM with custom operating system???
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    Efi 7.5.3

    I've tried to follow along on DP and EFI website, but wasnt sure if ALL the bugs have been worked out on the new 7.5 release. Specifically, did they get the bugs worked out so you can BB log now with the PID's working ??? Also has anyone tried flashing a lowly ol' LB7 with it yet? I'm pretty...
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    Standalone allison controllers

    Ben, I appreciate all the research you have done on this subject and all the information you have shared. All I was wanting to do was come up with a way to put in the 6 spd VB without buying the SC kit. The tap shift is neat, but I really only wanted to drop my rpm during 70-75 mph...
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    Standalone allison controllers

    Don't suppose there is a cheat sheet which will help when looking around trying to find a TCM with the correct calibration ??? serial #, part #, etc... BTW, would getting this TCM and telling it is from a 200_ year truck help out with making it work with EFI Live?
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    Dodge Trans Swaps

    Mike, Is the Dodge tranny an overrun (I think thats the term) type tranny like the ol' TH400's and 4L80E's? Just wondering about the fundamentals of why there is no defuel on them. A buddy of mine has a built one in his Dodge, but he doesn't have the power of EFI Live to help with the...
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    Changing 4th gear shift point

    Mike, Thanks for your opinion. I was afraid that this was done for a reason by the Allison guys originally. Unfortunately my tranny is still stock and it would probably really hurt it :(
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    Changing 4th gear shift point

    For a stock Allison is it acceptable to reprogram the TCM to make it shift into 4th gear sooner? All of the other gears will shift with the engine speed at or below 2000 RPM. For 4th gear, you have to get to ~38 MPH before it will shift with stock tuning (light throttle shift point). I know...
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    What is needed to make a 5-speed a 6-speed????

    Is that why some people are trying to swap in the new TCM's? I believe that the new GMLAN is different than what was used on the older TCM's. But I believe that some people have also figured out another way to get them to talk.... Maybe something like the '96 Impala SS's ... [GM left in the...
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    ghetto drive pressure set up

    No, that is where the fuel pressure gage is supposed to go :) (at least on the gasser's that I have played with)
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