performabuilt

iTrader: (25)

First I am not a tuner nor claim to be and I am not tuning this car lol.
I have a customer with HPTUNERS and here is his od issue if anyone care to input,
When driving the car the converter locks in second the unlocks in third,
So basically its
1st gear converter unlocked
2nd gear converter locked
3rd gear converter unlocks
4th gear converter unlocks

Now here what the data says it actually shows the PCM enabling lockup in 2nd gear. You can watch it say disabled-enabled-disabled-disabled with the shifts so apparently the PCM is commanding lockup on in second.
Now he says he has all the MPH for lockup in every gear set ridiculously high and it has no affect on second but does eliminate it for all other gears. The PCM still enables lockup in second gear only.
He says he has posted this in various forums including Hpt but got no response. So I told him I would post in here since there are plenty of good tuners on this forum and surley someone will have and idea.
He is also supposed to send me a log of his tune. I don't have the ability t read it but will post it on here when he does for those that do,
Thanks
Frank at PerformaBuilt

DrkPhx

iTrader: (15)

What's his setup? Does he have a big stall? If so which one?

What's odd is 2nd gear lockup is disabled from the factory by maxing out the values in all the cells. Why did he max out the values in 3rd and 4th gear? That doesn't make sense (unless he was testing something) Anyway, I would start from the factory settings for all the tables and methodically tweak from there but leave the 2nd gear values maxed out. Tell him to stay away from wholesale changes when tuning these tranmissions. They are very sensitive to even small changes.

BTW - What does he have the TCC release tables set at?

wait4me

iTrader: (10)

Id say user error, The Converter lockup is not turned on in second gear from the factory, so either he messed with it or something is wrong.

If he had efilive i can just send him a modded file to make it all work right, i just dont have hptuners.

He needs to shut off misfire detection at idle and low rpms, That will also not allow it to lock up in 3rd or 4th

performabuilt

iTrader: (25)

Well he says he intentionally has it set to not lock in any gear by setting the lockup mph way high.But it still locks in second.
anyway heres what he posted in HPTUNERS FORUM maybe it will help

"
Just installed a Yank SS3600, told by Dave at yank that shift extension would be 4800-5000rpm. Car shifts at over 6200 and drops to 4200-4400rpm.
I logged a run, 1-2 shift @ just over 6200rpm dropped to 4550rpm. Looking at the log file I noticed a few things. On the graph I notice the rpms stop/hesitate at 4900rpm and wheel speed goes up to 60 then drops to 51mph and at the same time the rpms drop to 4559. Also during all this the TCC slip goes negative briefly, about -400 rpm or so, during 1>2 shift trans mode changes to ---3--- and holds that all through second and it goes away at 2>3 shift.
1st two files have WOT runs, third file is the tune I'm using.
Attached Files wwot 7 3.hpl (23.6 KB, 7 views) wot 7 5.hpl (76.0 KB, 6 views) tuning for Yank TC current.hpt (461.5 KB, 14 views)

9000th01ss

iTrader: (10)

Heres the duplicate post. https://ls1tech.com/forums/automatic-transmission/966778-little-trans-related-tuning-help-needed.html

Like I said, looking at what you're typing here and looking at the scans, the scans and story aren't telling the same thing.

What I see is it starting to lock in 2nd, it never does. It locks fine in fourth.
They both say WOT runs but only one is.

My point: accurate info gets accurate answers.

And if you don't have HPTuners yourself what are you going to tell him?
It's a huge relay of messages from HPTuners site, this site, double posts.

9000th01ss

iTrader: (10)

Thats a normal shift.

performabuilt

iTrader: (25)

Hmm MAYBE I AM MISSING SOMETHING BUT WHILE YES THE RPM should drop during a shift I don't think the MPH would drop during a shift ?

9000th01ss

iTrader: (10)

Dude it drops by 9 mph for a second and a half, that= low hp or good traction or both. He's at 100% tps during that shift, yes my car will chirp the tires and the mph will go up for a second or two then go down sometimes.

This **** just doesn't make sense, heres why. You say: Thats not in the change history anywhere.

There are so many changes made to this tune. You say an individual did this right, not a shop?

I see it's a 1999 camaro and there are changes made to something to do with an ETC (electronic throttle control).

This car needs a professional tuner IMO.
Not going to get fixed over the internet, but thats just my opinion.

Sorry to be straight and to the point (or my opinion), sorry if I sound rude.
Things just don't make sense.
edit: it doesn't even seem like the tune matches the scans, it's set to lock in 3rd but never does.

9000th01ss

iTrader: (10)

It looks to be locking fine in fourth. See pic.
Seems to me the tune provided doesn't match the scans. In other words we'll never know why whatever was going on in the scans was going on.

performabuilt

iTrader: (25)

Thats cool , I really know only very little and ys he is tuning it himself and I am only able to tell you what hes telling which agreed as I told him does not make sense. But I told him I would post the description he gave and the other stuff and see what anyone had to say.
Thanks for looking though ,