is it neccessary to have the tcm updated on an srt8 charger built in july of 06? i sent it to the dealership and told them to do it. anyone had this performed?
Many many people have performed the TCM TSB. Do you still have the shift hesitation between 1st and 2nd gear? A lot of people say they would never do it again. For me, I'm pretty happy with it but I would think twice about getting the TSB performed. If you're going to get a Diablo Predator, you may have to get it done. I'm sure others will chime in.
Yea, I DID NOT do it for the simple reason that it will short shift you to 2nd doing a burnout. The main reason the TSB was created was to get rid of the shift hesitation from 1-2. You can search this but basically the tcm programming was designed for the 5.7l engine and the 6.1l spins up quicker to redline and was causing the motor to brush the limiter, hence the hesitation. The fix was done but also DCX changed the programming to auto upshift on it's own in manual mode when you hit redline and THAT is what causes the short shift to 2nd doing burnouts. Couple fixes, only being the Pred but also the B&G. Some like the auto upshift at redline and some don't, it's a personal thing.
Just a small nit... "short shift" generally refers to upshifting BEFORE hitting the normal max shift point. A short shift will not only upshift prematurely but also leave you way too low on the rpms in the next gear. There was a huge hoopla when this first came out because people were swearing that the car short shifted. It turned out that they were spinning the wheels, and the analog tach on the dash lags behind and they thought they were short shifting. Logging it with a starscan proved otherwise. To further reinforce the effect the tires would often hook during the shift. This also left you with the same result as a short shift would have. I haven't tried but I suspect with your basic, minor mods and a tune you should be able to spin right through it or immediately after. I know that I break traction on the 1-2 shift more than just a chirp and sometimes have to lift a bit to hook up again sooner. Launch, run it up through 1st, shift and break traction for 1/2 to 1 sec. Like I said, just a small nit but maybe worth clarifying and I need casino bucks... O yea, my personal opinion is that I really like the auto upshift. Nothing worse than forgetting you're in autostick, taking off smartly and... rev limiter. And I suck at autosticking so the trans is way better at it. You can feather a burnout. Only downside I can think of to the autoupshift is on the track/twisties when it might be preferable to hit the rev limiter rather than find yourself in the next gear.
Right Mr. Wizard, my bad, poor choice of words but it gets my general point across ... it will upshift for you before you want. At least that's what I've been told since I never did the TSB and the B&G fixed the hesitation issue. Glad to help you get casino bucks too! If you want, just follow me around and "nit pick" my posts, that should get you tons of money, lol!!
dave - as eloquantly as you put this, i would somewhat disagree with parts of your comments. seeing as i have been a "victim" of the factory tsb for the tcm, i 100% am positive that the car prematurely shifts out of 1st when spinning the tires. you are correct in that if things do shift early, or one gains traction during the shift, the subsequent "bog" will happen. i experimented a great deal with this issue before i had it resolved by having the car reflashed (even though it was said it could not be done by several "experts" on the various forums). i was able to spin the tires smoothly into second gear and then some while in manual (with the auto upshift). put the car into drive, and do the same thing, on the same stretch of road, same conditions, the car would shift before 5K on the tach, get traction, bog down. i agree that our analog tach does lag, hence why so many people complained of hitting the rev limiter in the 06' cars, pre-tsb, but lagging by close to 1k rpm.....i don't think so. :bigwink: anyway, to answer the orig. posters question.... i WOULD NOT do it. get a predator and be done with it!!!
Chris, you had your tcm reflashed back to stock after having the TSB done?!?! I thought that couldn't be done???
yes scott, i had it reflashed. not back to stock, but got rid of the friggin programming of the tsb.....
Eyeballing the tachs don't count. I don't think we had DashHawks then, did you verify with a Starscan? At the time I was thinking that even putting a good video cam on the EVIC digital tach would have worked. Ummm, Is the Predator able to Enable autoupshift on the old TSB flash? I don't think it can. It is able to enable or disable autoupshift on the new flash.
my eyes are super calibrated to the "n"th degree...... remember, i am a legmaker using state of the art, super duper technical tools and machinery.......:whistle: to your second point, i think you are correct. so i guess if you want the autoupshift part of the pred to work, you would need the new flash.....
see my man...plenty of responses... just dont listen to Legmaker...hes a freaking wack job!!!!!!!! hahahahahah...
Exactly the same thing I was gettin' pre Predator install. I know it was shifting way earlier than the red line if the tires spun at all.
hey steve - blow me you whore!!!!! i am a WEALTH of useless, but very valuable knowledge on these cars!!! hahahaahhahaha in all seriousness, i hated the day i did the factory tsb for the tcm. i did it after i got my b&g II pcm waaaaaaaaaay back in the day. it pretty much (as rick would say) neutered the B&G!!!! even after the pred was installed, it still sucked until i had the tcm reflashed with the so called "leo version" flash...... still not perfect, but then again, this car never has been imo when it comes to the tcm programming!!! this is why i can not wait for diablo to come out with the tcm support for the srt's!!!!
Hence the term ... Tool Boy, lol!! I think he was talkin bout the hesitation issue, get the pred or the b&g and forget the TSB, that is what it was originally made for anyway, the shift hesitation. As for the auto upshift I believe in all my research that the TSB is the only way to address that issue. Unfortunatley the originaly poster didn't say what his prob was, just whether or not to do the tsb.
wow, yet another person with this issue....... strange.....very strange......:shifty: heheheehhehe see dave, we all can't be wack jobs can we??? ok, maybe i am, but not everyone else!!! dahahahahaahhaa :grin:
