The Tranny-Nanny

So then the Predator would not help me out in this situation. BTW thanks for the info.

 

the pred does not have tcm capabilites at this point to my knowledge. does a lot of other things very well, but tcm support is not there yet.....

 

Then is it only my car that can burn rubber like a Toyota Prius or do other people have this same problem?

 

lol a prius...

 

... well maybe I am exaggerating a bit.

 

huh???? our cars can smoke the crap out of the tires...... problem, or nanny part, is that it tends to short shift out of first and drop it out of the power and it will bog down........ also, the loss of the abilty of the 06' models to hold first gear without it auto shifting......

if yours is not burning rubber, try reaching up and pressing down the esp button for about 7 seconds...... you will roast away after you here the ding!!!!

 

Yeah mine does the same thing (smoke in first, shift and then bog down). I guess I am just used to all the big blocks I had in the past without all this electronic crap. I used to be able to smoke them for a mile without even thinking about it. But don't get me wrong, all this technology is great.

 

I have an 06 and I don't know what problem you guys are speaking of...the Predator can eliminate the auto-upshift and you can up the rev-limiter too no? Perhaps, I'm wrong since I leave it on the auto-upshift even at the track. Whenever I do a burnout, I usually don't go too crazy anyways but I can still fill the entire area with smoke easily. I also have never had an early upshift when hitting it in first anymore. I had the TSB flashed when it was 1 month old and it would occur a lot especially when ascending a hill..

 

I agree if I could keep it in first this would definitely help but it is very difficult to do even if you try and feather it.

 

Yea I still have the problem when I hitit in first she rockets, bogs and shifts to second then slammes into second and continues it is beyond yerky very weird.

 

Just go out and buy an 07/08 and a Predator... problem solved.

 

either that, or get a new performance tcm....... the tcm is the problem from my understanding..... i could be wrong, but mine started doing this after the tcm tsb update way back when!!!! my recent experiment with "special" programming at the dealer addressed the tcm and i think that is the big difference i feel in the drivability of the sled!!!

 

You have me wondering..I did have my 06 flashed with the tsb...have you checked cleveland pick a part? I know I can gold a burnout for a long ass time but haven't tried anything like a block long lol.

 

What, can't you turn off the auto upshift with the predator?

 

Wow, lot going on here. Seems the dreaded "nanny" has reared her ugly head again, lol.

Ok, here's my take (and someone please correct me if I'm wrong ... Quick, you listeing, lol). The original TCM TSB was for 06 models designed to get rid of a shift hesitation that occured near redline at wot. Something about nearing the fuel cutoff point and the TCM not calculating things correctly for the shift. The TSB flash corrected it but it also changed 2 things. One, in manual mode it will upshift at redline on it's own (kinda surprising it wasn't originally programed that way). And two, it will short shift to 2nd doing a burnout and bog you down, hence the dreaded "tranny-nanny" term was born.

I chose not to have the flash done for the 2nd reason, short shifting like that is a major no-no in my book! The original hesitation issue can be corrected by getting the B&G flash (what I did) or the Predator (what I will be doing) but they'll do nothing about the short shifting problem that came as a result of the flash, from what I understand.

The flash cannot be removed once it's done so I'd suggest what Ron said, get a performance TCM and the Pred or find an original 06 unflashed TCM and get the Pred. And no, you can't have my TCM, lol!!

It's kinda funny how the tsb flash has caused more problems than it corrected, they should have just left well enough alone!! Bad DCX :domotwak:

 

haha, didn't read this thread for days and just decided to look for some reason or other.

More of a programming oversight going from the 5.7L to the 6.1L. The PCM is common to both and detects the engine type immediately after startup. Fires the engine with generic parameters and then sets a flag or something for engine type for using specific parameters, routines, tables, etc. So there is a lot of common code in there. One of the things they left common was that used to initiate a shift. They track a bunch of things looking for a shift. What wasn't accounted for was that the 6.1L will wind up faster than the 5.7L so it was right on the edge of bumping the rev limiter before the shift completed. Some did and some didn't and to varying degrees.

It's not a short shift. Many people mistakenly thought it was since they were watching the analog tach (which lags) instead of the digital one. In every case the people who swore it was happening and went to the trouble of using a StarScan to verify were convinced otherwise (no DashHawk for logging at the time). You spin the rear tires until it gets to the normal max shift point and it shifts. Shifting into 2nd causes the tires to hookup at a slow speed instantly dragging you down into serious bog territory. Kind of the same effect but it was not short shifting.

[edit] oops, you said TCM and not PCM. nevermind (removed). but I thought the shift initiation is done by the PCM.
The predator manual (mine should be here on the 8th! woohoo) says you can disable the automatic upshift in manual mode. Should get you back to the original behavior even with the tsb.

I'm one of the few that really liked the tsb flash. I like to stick it at times and then I'd forget, romp on it at a light and hit the rev limiter... very embarrassing and a bit violent at times. Only downside I could see to it was that burnouts require modulating the gas.

 

^^^^^ Nice sig phrase Dave...was a genuine member buhahaahaahahahehehehe

 

Geez Dave, you dissected my post like a mad scientist, lol! I said to correct me but I didn't think you'd take my post apart piece by piece, what'd I ever do to you?!?! Hahahahahhahahaaa, J/K!

Seriously though, I mainly didn't do the flash because of the short shifting thing (yea, I'm STILL gonna call it that) that others were complaining about and as I said, the B&G took care of the shift hesitation issue. Also, I don't like "irreversable" things (I probably shouldn't have had kids then huh, hahahahhaaaa!).

I hear ya about the redline upshift and like I said, I'm surprised DCX let it get through that way without it upshifting itself. The motor revs so quickly that I've hit it myself a few times (first time being my initial test drive, can you say EMBARRASED!!!!) and you're right, it's almost violent. I almost did the tsb for that reason but I just didn't want it to upshift on it's own at high rpms.

I do all my "racing" in "D" but I drive the car all the time in manual mode (I miss a stick shift and really enjoy the auto stick) and love driving the twisties (hwy 9 and Skyline). When I do I keep the car on the edge with the rpms up (for quick accelerating and braking) and I'd hate for it to upshift on it's own, that would just kill it for me, so I held off on the tsb.

I love the car as is and that's what really matters right? Sounds like Ike isn't too happy that's why I seconded Ron's suggestion, a performance TCM and the Predator, should make him very happy!! Right? Right??

(p.s. please don't pick apart this post too, I don't think I can take any more ... :cry