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Yea Sean Boyle does a great job as usual explaining each phases of the shift and it was quite interesting to follow along as he was doing all the testing. I will let others that know about tuning...

The command for PCS 2 needs to change so that the 3-5 clutch it controls does not start to apply so quickly. It is applying during the fill phase of the shift (see attached graphs showing the 4...

There is a way to go around the problem that removing the wave causes, I just don't know how it is done in the tuning, that's not my strong point. No need to raise pressure on those they already...

I don't know enough about tuning to know how to go around the problem that way. But removing wave plates, adding frictions or reducing clutch pack clearances always cause headaches on those. Not to...

Amen

You did not log all the transmission PIDs so it is really hard to figure out what is going on with certainty but it looks like the converter is locking up as commanded. The high stall is probably...

Ok well that makes a lot more sense then. Thanks for the clarification.

Thanks for explaining, I am always trying to understand better the racing world. Getting better top speed I get, but a few tenth is surprising to me just because I would think it would slow them down...

Post a log so that we can see what is actually going on when it is acting up. Be sure to include all the transmission parameters and to log both cold when it is acting up and warm once it feels fine.

Glad it is working good now. Scary that they did not find the alignment issue, hopefully it does not happen again. Thanks for taking the time to post this update.

Thanks

I would call WIT at this point, they will assist you. I am not familiar enough with the procedure to transfer the programing in their unit to know why there is no way to load what you saved from the...

OK good. Then either take the TEHCM out of it and plug it in the vehicle harness or hoist the transmsision up if possible to get it close enough to reach so that you can connected the vehicle harness...

Assuming it is equipped with an 8HP, there is no low sprag, so you really don't want it to go back to first until you are stopped or it will have an unpleasant downshift clunk.

Do you still have the original transmsision there?

It must just be a VCM Scanner glitch then. The OSS is in the transmsision, you have to pull the pan to see it.

I have no idea if that will cause it or not, unfortunately the tuning side of things is not my strong suite.

LOL, as the saying goes... Seeing is believing. ;-)

Your OSS is not reading, no idea why that is but it makes it harder to analyze your log. The problem looks as if your transmission is slipping badly in first and for quite a while after the 1-2...

Fair enough, it just seems super odd to me, but I know nothing about racing. Lock-up in regular application is just for fuel economy, it is something you use only under light load so I was scratching...

If I may ask, why do you want the converter to lock when doing a WOT pull anyway?

The lining is there in the picture, it is brand new, you just have to zoom in to see it because it is only 0.020" thick.

It would be nice if all that pressure that bows the piston made it fully...

No it is different for the captive clutch setup as I mentioned before but did not explain why. First you have almost double the friction surface area so it requires less pressure to be able to...

I don't like it, specially if this is something you do frequently. The main reason is that not all identical RPM slip generates the same amount of heat.

From factory during normal driving...

Good question. I should have specified that this applies to all 6L series single disc OE converter. It does not apply to the ones with captive clutch. I don't know how much converter clutch apply...