looking for input again.

[gjp]

Re: looking for input again.

truck was at 11.4-11.6 without alky spraying. would like to run 59 as soon as its adv. because the closest tunner is 400 miles away. at least my truck is not falling flat anymore. I still have to find a older laptop with a serial so i can tune my tcu. Thanks guys.

 

[JSM]

Re: looking for input again.

code59.org is available and open, you just gotta go register to access the files, etc.

I was able to dial in Hardman's tci with a USB to serial adaptor fairly easy. Nice thing about tranny is you don't need to tune it much after the initial settings so your not accessing it daily or anything.

 

[George Blake]

Re: looking for input again.

Gary. Get some datamasters of the truck going through some pulls. Email the datamaster with some notes referring to points in the datamaster of what you would like to see in the trans.
With the alky off, is the truck not falling flat now? They are doing some flat amazing stuff with code 59. Jeff is right. You need a custom tune or go back and forth with Phil to get the chip where you want it with the alky. If Phil is willing to do that.

 

[gjp]

Re: looking for input again.

my biggest concern is the shifting. Not shifting where you said it should and it holds the shifts to 4500rpm wot. Not sure where you set it at. I have not done a full 0-100mph run yet. Kinda worried not to mess the trans up the way it is shifting right now.
My usb-serial works fine with the DM but the TCI says no ecu found??? just wont connect?

 

[George Blake]

Re: looking for input again.

my biggest concern is the shifting. Not shifting where you said it should and it holds the shifts to 4500rpm wot. Not sure where you set it at. I have not done a full 0-100mph run yet. Kinda worried not to mess the trans up the way it is shifting right now.
My usb-serial works fine with the DM but the TCI says no ecu found??? just wont connect?

The part throttle shift points just take some tweaking. Your ony talking 4 to 6 mph. The TCI unit uses all the factors I put into it to determine road speed. Then it uses road speed and TPS to determine part throttle shift points. You have to datalog with it to see what needs tweaked.
It downshifts fine at part throttle. You don't think it's downshifting at WOT. Is that right?
Everything else is fine. Your lack of power is the alky. Trans won't fix that.
I can look at the TCU but without a datalog, it would be like you calling up Phil and saying, I don't like this chip, I'm gonna send the computer to you. Basically, without a datalog, I will have NO idea where the program needs tweaked for your setup.
Now if you think it's gonna behave like a 700 on downshifting, NO.
The gear split is not NEAR as spread out as a 700 so your not gonna get that big rediculous 4-2 downshift. It's most likely downshifting but your not feeling it because when you go WOT to force the downshift, your alky was drowning it and you had no power.
Again, without datalogging, can't see what it's doing. If you have a datamaster, run it. At least I will be able to see relative throttle position to engine behavior and road speed.
From reading your posts it really sounds like there is nothing wrong with the trans at all. You want the part throttle shift points adjusted and you need to do a bunch of tuning on the engine. Your engine has to be making torque to "pull". If it running poorly at WOT, trans can't do anything about that. Your actually down to the fun part. You've done the hard stuff.
I more than willing to help, but I'm not gonna be able to make your engine produce power. Your gonna HAVE to find a tuner on that end.

I think I know what the problem may be.

 

[George Blake]

Re: looking for input again.

I know what your problem is.

I looked at your emails and the notes I took when I talked to you on the phone.
You wanted 5500 RPM shift points. That what I programmed.
Guess what. If you reving up to 4500 or whatever it is and it's holding, you are WAY out of your powerband.
You said your truck did this before. I bet you had the good 'ol 5000 rpm corvette governor. Again, taking you WAY out of your rpm powerband. Let's run STOCK shift points for WOT. Now. WOT downshifting.
Your setup is this: On the 4L80e, you will downshift on a forced downshift with TPS. You can manually pull it down if you really need more than one gear. 700 can do two gears on one forced throttle downshift.
80e using the TCI will use a MPH factor. For example, if you want to downshift to first and you are traveling in 2nd gear, the truck will have to be going LESS than 35MPH or it won't downshift. That is the way yours is programmed. It keeps you from blowing your engine up.
Check your notes on your engine build. Is it a stock cam? A stock cam does NOT want anything over 4400 to 4500 rpm. You will still make boost, just no torque. You need torque to move. Gotta keep the engine rpms down where your POWER is.
Surely to goodness SOMEONE around you has an old ass laptop you can borrow.

 

[gjp]

Re: looking for input again.

5500???? I said that. I Must have been drunk.LOL. I remember saying I had a stage 2 turbo. stock cam and bottom with l35 ported heads....

the 1-2 shifts at 16 but its not to bad. the 2-3 shifts at 35mph and tends to hold long and the rpms stay high. 3-4 also feels like It should shift earlier but holds the rpm high. The engine feels strong and I just have to tweak it. Hard to adjust engine when the trans wont shift. I love the trans. 80e feels good. just like you said I need to tweak the shifts a bit.

Ok. So I will get a laptop somehow by this weekend and if you can walk me through what I need to change and to what after I get a data log. . Thanks.

 

[George Blake]

Re: looking for input again.

I will make a new configuration program and email it to you. You can then do a "read all tables" and load it up on the laptop and double check the parameters again. Then, "communicate" with the TCU, get a link and then do a "read all tables" and it will instantly reprogram the TCU with the new configuration file. VERY easy to do. Once you get in there and look a little, your confidence will go way up.

5500???? I said that. I Must have been drunk.LOL. I remember saying I had a stage 2 turbo. stock cam and bottom with l35 ported heads....

Ok. So I will get a laptop somehow by this weekend and if you can walk me through what I need to change and to what. Thanks.

 

[gjp]

Re: looking for input again.

Thanks george. Like I said before. "you are da man" Your coustomer support is excelent. Thanks for helping me.

 

[George Blake]

Re: looking for input again.

OK, Gary.

Got your program done. "GJPv2"
WOT shifts are
1-2@4200
2-3@4300
3-4@4400

I have your TCC set up to lock up as an ON/OFF type setup. I do this by maxing out that field to "255". This means upon 50MPH you TCC will immediately lock up. No cushioned lockup. If this is too aggressive, just lower the number 10% at a time till you like it.

@20% throttle (this is my "generic" part throttle percentage since GM uses it for their testing)
your gear changes are as follows:
1-2 shift at 11 MPH
2-3 shift at 24 MPH
3-4 shfit at 42 MPH
Followed by TCC lockup at 50 MPH.

So you'll feel 1-2, 2-3, 3-4, lockup. 4 distinct shifts.
I tried to space them so they feel more comfortable also.
If you follow the part throttle shift table chart you'll see a "slide" instead of gradual curve. I left this hole intentionally so you wouldn't have a "clunk-clunk" upon TCC engagement at cruising throttle position.

Your line pressure charts are also more aggressive. I wanted you to feel 3rd and 4th when they come on.
You can take your personal computer down to the car and program the controller if you want instead of getting a laptop. The laptop will be nicer though to make multiple changes when you get comfortable with the programming.
Keep this thread going and when you get the program and a way to do it, chime in and I'll walk you through taking that "GJPv2" program and putting it into the controller.

 

[George Blake]

Re: looking for input again.

Also, if you can remember at what RPM the truck fell on it's face I'll try to adjust WOT shift points so we go just to the point it's "beginning" to not pull anymore. We want to get the most out of each gear.

 

[gjp]

Re: looking for input again.

it was around 4500 1-2. Also could have been spraying to much alky. It has a stock cam but with roller rockers. I will use my PC to download the program for now. A laptop is in the works so I can fine tune. I understand without a tunner and some serious tweaking on the trans computer It will not run at 100%. Just trying to get it running good enough to hit the track and see how it does. I can tune afterwards and try to squeak out a few more tenths. engine is running good on 91 @ 18lbs with a trace of KR.. Thanks

 

[gjp]

Re: looking for input again.

ok George. I did it. My tower was able to communicate easy. No problem. I downloaded the file. It asked me to update. and changed 49 or 409 (something like that) files. So I should be good to go. I will try it in a bit. I have to make dinner for family first. Thanks.

 

[George Blake]

Re: looking for input again.

What the hell? Gary I made a big long post telling how to do it in case you needed it for reference and ALL of it frigging disappeared. I submitted it. It showed up. I looked at some other topics, came back and it was gone. If you have ANY trouble, post back here. I'll keep following this thread. Nice server. Hiccup my butt.

 

[gjp]

Re: looking for input again.

It worked. did it the way you said. Thanks.

 

[mrweelr]

Re: looking for input again.

Gary - if you want to borrow some tranny pressure gauges, come over and get them:

FWIW, my shift points are still too high, even with the 2500 9/11 and as much weight as I can weld onto the governor. My WOT shifts last time at the track were 1-2 @ 4200, 2-3 i@ 4775, and 3-4 @ 4900. This is with a "bone stock" internals engine so my 3-4 WOT shift is about 1000 RPM too high and hurting my top end big time. I don't know what else to do about it other than tear my RPM trans apart, but I'm not going to mess with it anymore. If and when it goes, I'm switching to the 4L80e like you did. My stock trans/converter shift points were 1-2 @ 3950, 2-3 @ 4200, and 3-4 @ 3900. The only reason I got into the 11s was by locking the TCC at the line and it caused major knock on the -2 shift so I won't be doing that again...too hard on the motor and drivetrain. What I'm going to do is lock the TCC manually after it shifts into 2nd next time at the track. I wish I had the ability to adjust my shift-points electronically, but I'm stuck with the mechanical governor and a big PITA every time I want to make adjustments. I've pulled it so many times to add weight, I never want to do it again. Hope you get your shift points dialed in...it will make a huge difference, believe me. You can borrow my laptop if you want, let me know.

 

[gjp]

Re: looking for input again.

It was cool to hook up the computer and in 5 seconds change the way my trans shifted!
80e is the only way to go on these trucks.

 

[JSM]

Re: looking for input again.

It was cool to hook up the computer and in 5 seconds change the way my trans shifted!
80e is the only way to go on these trucks.

And some people thought the computer was a downside to 80e swap!

 

[George Blake]

Re: looking for input again.

How's it doing? Did you play with the settings anymore?
It may be better to take some time to get used to the part throttle stuff and then decide where you want to make changes.
On the WOT stuff. Don't see all of them for the exact same shift point. I like to keep the 1st WOT shift the lowest and then work up from there.
If you make them all the same, it can do a "skip shift". I wrote an article on it but basically you cannot set all WOT shift points the same or it will do a 2-4 shift.

 

[George Blake]

Re: looking for input again.

Must be doing OK. Kinda like when it's dinner time and no one is talking because the food is so good:rotf: Have fun with it Gary. If you need any help tuning it, let me know.

How's it doing? Did you play with the settings anymore?
It may be better to take some time to get used to the part throttle stuff and then decide where you want to make changes.
On the WOT stuff. Don't see all of them for the exact same shift point. I like to keep the 1st WOT shift the lowest and then work up from there.
If you make them all the same, it can do a "skip shift". I wrote an article on it but basically you cannot set all WOT shift points the same or it will do a 2-4 shift.