When I forced the converter unlocked, the shift feel was perfect, and it had full clamp of 220 psi right on the shift.

I agree that WOT lockup is going to seriously kill the converter life. But I don't see any reason why it's even trying to lock it up???

 

Me either other then its getting bad info from somewhere else. Remember the things that eliminate lockup enable are speed vs tps. Are those working perfectly?

 

They sure seem to be. TPS showed 100% on the log, and speed matched the dash, and seemed accurate for the speed it should shift out of 2nd at (somewhere in the mid 80's with 3.23 and a 245/50r16 tire)

Kindof stump'd here

 

If there was something off in the tune far enough to make it lock on the shift I'm sure 01ssreda4 would have seen it. I'd rule out electrical because from memory the tcc gets a ground signal from the end to lock, so if it was a bare wire grounding on the valve body during whatever is happening in the pan on the 2-3 shift it'd still do it with the tcc turned off in the tune. Quick test if you want to waste the credits is to just max out all 3rd tcc values, if it works proper that way then there is something in the tune somewhere causing it.

 

The values are already set to 255 apply and 254 release for 3rd gear. And the TCC release TPS table is set to 70%...so over 70% it should be unlocked right?

 

Yes, its effectively disabled in the tune. (for wot 2>3). But look, maybe its only partially trying to lock, perhaps indicating an internal trans issue. Maybe a trans guy can chime in. The test to me would be disconnect the wire from the pcm for tcc lockup. If it stops its the pcm, if it doesnt its internal.

 

I know nothing about the fluid movement or possible cross leaks but was a thought. I opened the tune and one thing I do that isn't done in this tune is match all like tables that way the computer can't decide on its own.

In transmission/auto shift speed match the normal/Performance/cruise/hot tables to be the same as normal

Transmission/shift pressure match the normal and performance. I'd also add some pressure to 2-3

Transmission/auto tcc matchthe normal/cruise/hot/performance tables

I'd try this and reload the tune and see how it goes. Sometimes just reflashing will fix the problem also. Never had it happen on a car but some equipment at work you'd make calibration changes save and reboot and it was quite clear that the changes didn't take even though all the values we inputted were still visible. Another reboot without changing anything and the changes were there.

 

Ok...so redssa4 was right...im not sure how or why...but it was torque management.

I rode again but took the time to setup the right stuff to log instead of the standard layout. I logged timing and torque management timing retard on the same plane, and it was pulling like 26 degrees out.

Logged torque converter lockup solenoid and it actually wasnt commanding lockup...i should have taken the time to setup tables more than what I usually use but I was a little rushed over lunch.

So. I said screw it, and used the credits...removed TM on the 2-3 And wham...no problem

So for curiosity sake, I flashed the old tune back, and tried commanding converter unlocked again and same thing...no shift issue. Watching the TM timing retard showed that when the converter was forced unlocked...it wasn't pulling timing out.

Then, when I didn't force the converter to do anything, it still didn't lock...and the solenoid didn't try to lock...but this time it DID yank a bunch of timing out. There must be something there about how the pcm calculates torque management.

So, to sum up...i flashed back in the tune with torque management removed...didnt change any other settings...and the shift is perfect...doesnt pull timing out...nails the shift and just pulls

I'm not sure how the pcm calculates and figures how much timing to pull for TM...im not sure why commanding the torque converter off would make any differences, but it seems like it did. It nailed 3 back to back WOT 2-3 shifts both times I had the "old" tune in it and commanded the converter off.

Removed torque management, nails the shift. All is good in the world.

Thanks guys, I'll just stick to building hardcore 60e's and hope I don't have to deal with "tuning" this issue ever again haha

 

So apparently, commanding the converter off with the scanner temp disables TM by the sound of it. If it does work that way its something i sure didnt know.

 

Glad you got it. The credits were well worth it for the learning experience. Before I updated my hptuners operating system last night there was a lot more tabs to change setting in both the engine and tans tables. So possibly one of them is your culprit. Not sure what operate system your using but I think until yesterday i was on the original from 2010-2011. So now I'm learning again and going to try a e38 computer this weekend

 

Likely a 411 computer. They are retarded simple. I hate how complicated the newer pcms have gotten.

 

Yes on the 411. Not real good with computer stuff but I meant my original hptuners software version from when I bought it in 2010-11. Just finished a friends car yesterday (4th gen) and after the software update last night I re opened the tune and was baffled. Stuff I was use to changing isn't even a option in the new version.

 

This would make sense. Maybe once you start commanding things, it figures you're I control and turns off TM.

Thanks for pointing me to look at TM. Glad I could get it fixed (and glad the trans I built is behaving great like it should)

 

Very, very interesting.

 

I have the newest version. I hated it at first. One of my tuning buddies told me to give it a chance. Now that I have I really like it better then the older versions.

 

I hope I do to but right now not so much. As far as some functions missing, good old google search found that for me. I think it was in display then advanced setting. Then close out editor and open back up. Now I'm fighting a gen5 camaro ve table.

It was in edit/view/advanced, in sure most people figured that out though.