Can someone please look over this tune and give me a little insight on what might be a problem. I am tuning an 07 LE5 with an auto tranny; I have the engine part running find. But the tranny tuning is new too me. Now what is happening is when he is going WOT the Tranny is not shifting in the next gear it is sitting the bouncing off of the rev limiter and only shifts when he lets up for a slight second. Under normal driving conditions the tranny is shifting tights and faster but I am just having problems with the performance settings. So any insight great

Heres a link to the tune Click here

 

I'm going to take a guess at lowering shift speed (mph) at full throttle.

 

I have some log files and other peoples tunes I can e-mail to you that work fine if you need them.

 

Just like Witt said. Lower the MPH for the shift.

Alternatively you could raise the rev limiter if it would still be in a safe range.

Basically it won't shift until it hits that MPH, but if it hits the rev limiter before that mph it will just bounce and hold gear. When you lift off the WOT it reverts back to the Partthrottle shifting which SHOULD be set at a much lower MPH.

BTW> Is this a tune that you created? I put a bug in my LE5 tune on purpose to make sure the car would not shift out of 1st gear when WOT so that anyone else using my tunes would have to know what they were doing to make the tune work on a car. (a cheap way to see where my tunes went) I had the MPH set about 2mph too high in 1st gear for that reason. Let me know if you got the tune from someone else, because I would be the first to tell you what other bugs I hid in there that you will want to change.

Terry> I'm taking a guess that he may have got my tune, which you also have.

 

So it was a bug that had DOC stumped and ultimatly had him re-flash my 07 ECU as an 06 ECU?!?!?!? I couold give you such a smack in the head!

but I have since collected a few more tunes then just yours.

 

I still have no idea why DOC would write the 06 tune over your 07. What he did was take my exact tune and then flash it to your car using the WRITE ENTIRE feature (which you have to do on the LE5). That rewrote your entire operating system, which is why you had a different VIN and stuff. What DOC SHOULD have done (if he knew what he was doing) was open both files and perform a comparison and then copy over the changes. But DOC didn't seen to know diddly about that so he did it the wrong way. Had DOC been honest and let people know that he was inexperienced he could have saved a lot of aggrevation. At that time I don't think he knew how or where to go into the tables to edit. And you can't just play around. I always test test test my tunes.

But yeah, scale back the MPH on the 1-2 shift point and you are golden. (Then multiply the injector flow rate by 0.94, and you've got it) That's only for the Stage 2 tune I did with the injectors from the SC and the harnesses you got me. The other base SS tunes did not have the shift points set so high, and were more of just a firm push instead of a kick in your pants.

 

Steve I beleive this is your tune, but I got it from Sean (Illamaitics). Not all of the settings are the same, It has my engine tune with bits and peices of other tranny tunes that have dome my way. I have played with both the MPH for the shift and the RPM, and have alted them I know for a fact that the MPH is lower then the RPM rev limiter.

Terry if you could, please email me a copy of a working auto 2.4 tune please. This is becoming a promblem because the guy lives in Daytona and I am in orlando.

Email is REDFOCZ@hotmail.com

 

I have the tunes from Steve and Illmatics. So I have the same you have.

BTW I gave up on tuning mine ause of all the bull **** I went thru. My poor car was flashed more the someone on a nude beach!

 

Try starting with a stock tranny portion and only modify the full throttle shift rpm. No need to play with the mph setting. Both conditions have to be met to shift and as long as you're only modifying the rpm, you'll continue to meet the mph requirement.

 

RED> That is my tune. Illmatics had it. He was the first I think to get it outside of AZ. Seriously just turn the WOT Shift MPH down.

Now that we know it's my tune, we can fix it real easy.

I can spot my tune from a mile away.

 

so ummm bump...it didnt work on my tranny...still hittin rev limiter, so we refalshed it to stock

 

crazy.....told him he probably set the engine rpm too low. I had that tune set for a 7300 rpm limiter because the cars were equipped with bigger fuel injectors. He should have scaled back the shift mph. Trannies can be tricky to tune. Could just be a lack of experience and might not know what to do. But I called him yesterday and we talked about it.

 

Hmm steve I will email you a copy of the last tune that I placed on his car if you could look it over that would be great, I tried doing what we talked about on the phone and it was just sitting there bouncing off of the rev limiter, so I have no clue why I have the enfing RPM rev limiter set highter then the tranny like you said to do and also set the MPH for the shifts lower aswell. Auto trannys FTL Ill stick with a 5 speed thank you

Anyways Ill shoot that out to you later on this evening when I get out of work.

 

Cool.......and the auto rules on the LE5 What you talking about. You just have to make it work first! We took SSFamily wagons cobalt from a 16.3 down to a 15.2 with just tranny tuning. Auto's gain so much from retune.

 

Ok so Steve do you want to try to do my car again? I have a professional shop who wants to try it but your tune was so good even messed up that I want to try it again. Do I still need the 2.0 injectors? I still have them if so or can you tune the car for the stock 2.4 injectors?

 

damn 15.2??!!!?? i was runnin 15.7 just before it stopped shifting into 3rd then it got worse an stoped shifting into 2nd and 3rd... i would be VERY happy if i could put down a 15.2

 

We'll get it there Sean just trial & error we are close

 

His wife got it on video. It was a fully laden 2.4L sedan with a full trunk and all hardware. It was strong considering 14.8 is stock SS/SC territory here in AZ.

I am glad to help you Terry. I want to see it work. I think YOUR only problem aside from the DOc crap was my mistake with the injector flow rate which had your car tripping the TC/ABS bologna.

Its funny because if I was there in person I could have all your guys problems fixed in 10-15 minutes realistically. I can work magic on these cars that you have to see to believe.

 

Explain this...how did IFR make the car throw TC/ABS lights...and what did u do to fix this...Ive never heard of this...and really aint sure how theyd be related.

 

lol ill be sooo happy to be dippin in the low 15's hahaha now that i got that pwer thing for your laptop we dont have to worry bout it dieing LOL.. cant wait o yea and thx every1 for the imput

o yea can i get a link to that video? i would love to see it

 

That's what Jackalope said was going on. I have NEVER personally seen it. More than likely all those problems had something to do with DOC using an incorrect operating system, but as Jackalope explained it. Everytime his car thru the lean code Traction Control and ABS would disable, and when the light went away they would re-engage.

 

I wouldn't blame Doc so quickly. That situation would be completely in the tune. The OS's are swappable as the hardware itself never recieved a revision between the 2 years.

The lean trim code is from incorrect airflow or fuel tuning. It probably wasn't the only one thrown at the time. Certain DTCs will disable all torque management and command full line pressure shifts from the auto tranny. Its a safety feature depending on the DTC communicated from the ECM to the TCM. A shop manual will state which DTCs will do this. Ones such as slow o2 switching and MAP-MAF correlation codes certainly will do this and probably were triggered with incorrect airflow or fuel tuning.

 

He was having MANY issues that I never saw ANY one else have. And no tune I have done in person has ever had that issue. I assume it was a mistake made on DOCs part, all things being equal. And somehow he had his VIN changed on his car......that actually takes effort to do since HPT will automatically retain the VIN unless instructed to change it.

 

figured id post..cuz my name was up here...umm steve did send me a tune back in the day...i wrote my tune with 06blackg85ss. we looked at his tune to get some knowledge about tuning. but guys seriously..on this auto trans..a tranny cooler is a must. when i logged it back in the day..a lot of slippage and increase of temp was bad...with the cooler addition...increase in temp is minimal and slippage is not there anymore...i just sent witt my current tune and log..but my car runs strong...tranny tune is tight.

the lean code is from if the ltft goes above 13%..if it does boom cel, this also caused the t/c light to display on startup...figured that one out...havent seen that code/ t/c light in a long time..hahaha

 

ok this is weird with my tranny tune when REDFOCZ is in the car tuning it, it runs great then once i put a couple miles on it (20+ or so, the longer i drive worse it gets) it will stop wanting to do shift under WOT... I just dont get it and we are only logging it revving to 6800 even though all other settings are set much higher... right now it shifts in "L" under WOT 1st to 2nd but then when i shift it in to "I" it doest shift just hits rev limiter and stops... o yea its the same for "D" doest shift 1st to 2nd or 2nd to 3rd under WOT i have to lift for a second for it shift and its kind of annoying...*sigh*...