4l80 big suff 3 woes

[autoaddictions]

Ive got to say im so fustrated at this point im ready to park this thing in the getto and call the ins. company. Ive had my TY built 4 about 6 weeks now and i still havent been able to really drive it. The big stuff 3 built in trans controller is about as complex as the space shuttle. I dont know what to do to make this thing shift correctly. When i shift it down into 1st gear the laptop hooked up to the big stuff ecu reads it as low 1, 2nd as low 2, Drive as Park/N, Overdrive as drive, N shows nothing and so does park. The trans control in the big stuff only has a few options for settings all of witch are set right. I called John Meany at big stuff and he sent me some trans setting to try and it shifts like balls and still reads wrong on my laptop. Now where thinking a pin in the wiring harness is wrong. **** im sick of all this. Im to steps away from ripping the ****ing thing out and going to a DFI and a TCI trans controller. How easy is the tci to use ?? Any body have it working properly. Am i the only one using the big stuff 3 system with the 4l80e hook up? George any help here!!!

 

[ed hess]

Re: 4l80 big suff 3 woes

frank

the manual for bigstuff trans control option clearly states if you reverse the toss and tiss plugs it can harm the ecu.

since this was the case i'm surprised you havent sent the ecu back to be tested and or repaired while also comparing the pinouts in the harness.

 

[autoaddictions]

Re: 4l80 big suff 3 woes

frank

the manual for bigstuff trans control option clearly states if you reverse the toss and tiss plugs it can harm the ecu.

since this was the case i'm surprised you havent sent the ecu back to be tested and or repaired while also comparing the pinouts in the harness.

I called and talked to john to get the ship to address for the ecu he said dont send it yet he was going to send me the pin out for the harness. He did and it makes no sense whatsoever, Im going to try to figure it out on sunday, if i can ill just send it all back.

 

[TT350]

Re: 4l80 big suff 3 woes

I have a BS3 LS1 with Trans.
It's still new in the box, keep us posted
maybe you can save me some grief.

 

[TT350]

Re: 4l80 big suff 3 woes

frank

the manual for bigstuff trans control option clearly states if you reverse the toss and tiss plugs it can harm the ecu.

since this was the case i'm surprised you havent sent the ecu back to be tested and or repaired while also comparing the pinouts in the harness.

Hi ED

I’ve looked in my manual and there’s one page
in there about trans stuff.
And it only went over trans type/setup and TCC.

Did I miss something?

 

[10secTy]

Re: 4l80 big suff 3 woes

I have set up BS3 with 80E's with no problems at all. It is basicially the same as a TCI unit. What problems are you having? Maybe I can help out.

Nolan

 

[ed hess]

Re: 4l80 big suff 3 woes

Hi ED

I’ve looked in my manual and there’s one page
in there about trans stuff.
And it only went over trans type/setup and TCC.

Did I miss something?

there is an additional manual for the transmission option.

​

The ​

Trans Input (shaft) Speed Sensor (TISS) and Trans Output (shaft) Speed Sensor (TOSS)


​

measure the input and output speeds of the transmission so the GEN3 ECU can determine when to lock


the converter, how much slip to allow with an unlocked converter, the vehicle load, the shift pressure,

and the vehicle speed. The TISS and TOSS sensor connectors are identical in shape and color. It is

important to make sure these connections are made to the correct speed sensor on the transmission.

Terminating these connectors to the wrong transmission sensor will effect transmission operation and

could damage the ECU, thus voiding the warranty.

​

TISS Sensor​

​

 

[TT350]

Re: 4l80 big suff 3 woes

I didn't get a trans manual.
Well looks like I'll be calling Nolan next week.

It’s not Nolan's fault,
My system was dropped shipped from BS3
Nolan had no way of knowing I was missing
a manual.

 

[George Blake]

Re: 4l80 big suff 3 woes

I can't help on the BS3. My experience is all in the TCI controller.

This is one of the many reasons I dyno them. It rules out transmission issues. I just hope it hasn't damaged the trans. Don't they label the wires? When I do TCI setups, I preprogram them and for $70 additional I even do the wire harness up to it is a matter of 4 wires to hookup. Hopefully Meany will figure out what's going on with the BS3. It may be an issue of just getting a good set of instructions. In the future you'll want to use Nolan for the BS3 setups.

 

[autoaddictions]

Re: 4l80 big suff 3 woes

One of my employees pluged the cables into the trans And yes he did miss match the tiss and toss cables! Funny thing is i drove it 15 miles on no boost too eds shop for Harry to tune, and it shifted threw all the gears under no load of course. Harry switched the tiss and toss back to the right way and uploaded the file John Meany sent to him from big stuff and Harry said it shifted mushy and it does not read the gear selected properly. I spoke to Mike at RPM he said the truck they built with the bigstuff3 also didnt identify the gear the truck was in also but shifted fine. He also said the MPH reading was way off even with the tire size and ring and pinion set up properly. Nolan have you seen these issues at all?
At this point i sent the ecu back to Big stuff to check and see if the tiss toss thing damaged the unit. Once i get it back well have another go at it. Any input you guys have be very helpfull. Im sure as this trans option becomes more popular these questions will be answerd! Thanks all.

 

[autoaddictions]

Re: 4l80 big suff 3 woes

I figured the trans problem out !!! The harness had two wires backwards pin P and R on the gray plug that goes into the side of the transmission. This harrness runs from the big stuff 3 ECU to the transmission .

http://www.putfile.com/pic.php?img=5676161
see here the red and blue side by side they needed to be switched

http://www.putfile.com/pic.php?img=5676162
here i cut the red and blue and switched them at the ecu side of the plug.

 

[Deanzsyclone]

Re: 4l80 big suff 3 woes

Yah I found it very difficult to read the pin out's with the tiny letters and numbers, ended up making a mistake my self on the wiring, but now that's an old story, my truck is the one at RPM.

 

[autoaddictions]

Re: 4l80 big suff 3 woes

Yah I found it very difficult to read the pin out's with the tiny letters and numbers, ended up making a mistake my self on the wiring, but now that's an old story, my truck is the one at RPM.

Yea its very hard to read. I faxed a copy of the pin outs to Mike today he said he was having a hard time with a customer of his 4l80e. I thought he could use it to double check all the trans harness he recieved from Big stuff.

 

[TT350]

Re: 4l80 big suff 3 woes

I figured the trans problem out !!! The harness had two wires backwards pin P and R on the gray plug that goes into the side of the transmission. This harrness runs from the big stuff 3 ECU to the transmission .

http://www.putfile.com/pic.php?img=5676161
see here the red and blue side by side they needed to be switched

http://www.putfile.com/pic.php?img=5676162
here i cut the red and blue and switched them at the ecu side of the plug.

Thanks for the heads up!! My trany harness is OK.

 

[10secTy]

Re: 4l80 big suff 3 woes

I was just tuning a GN with a 4L80E and the gear slector worked. Did you get a copy of the BS3 tran control manual? Email me at Nolan@campbellautomotive.com and I will send you a copy.

You have to set up the tire size, and gear ratios I do it on a dyno so that I know they are 100% right. We then drive around and I set up all the part throttle shift points and line pressure. You should be able to make the trans shift hard enough to knock out teeth.
Because BS3 does not have a shift rpm table you have to do all the shift points on the shift tables. So keep in mind in 1st and 2nd gear you have to take into concideration slip on the converter.I guess I will be double checking all the harnesses we use from now on.
If you need some more help with the tranny settings let me know.

Nolan

One of my employees pluged the cables into the trans And yes he did miss match the tiss and toss cables! Funny thing is i drove it 15 miles on no boost too eds shop for Harry to tune, and it shifted threw all the gears under no load of course. Harry switched the tiss and toss back to the right way and uploaded the file John Meany sent to him from big stuff and Harry said it shifted mushy and it does not read the gear selected properly. I spoke to Mike at RPM he said the truck they built with the bigstuff3 also didnt identify the gear the truck was in also but shifted fine. He also said the MPH reading was way off even with the tire size and ring and pinion set up properly. Nolan have you seen these issues at all?
At this point i sent the ecu back to Big stuff to check and see if the tiss toss thing damaged the unit. Once i get it back well have another go at it. Any input you guys have be very helpfull. Im sure as this trans option becomes more popular these questions will be answerd! Thanks all.

 

[Deanzsyclone]

Re: 4l80 big suff 3 woes

he said he was having a hard time with a customer of his 4l80e.

Gee I hope I'm not the one he feels is giving him a hard time. I'm thinking I have been extreemly patient durring the whole process.

Glad your up and running, I have heard alot of good things about BS3 being a very awesome tool for tunning your truck. I just wish the interface for monitoring was a bit more atractive to view.

 

[autoaddictions]

Re: 4l80 big suff 3 woes

I If you need some more help with the tranny settings let me know.

Nolan

Thanks Nolan, Harry Anderson is doing the final tune on the truck if i can get the bugs worked out. Now that i squared away the harness problem, i can move on to the last one. I was wondering how you sync'd the timing? I can seem to get it to hold the designated timing mark. I set the sync at 32 Degrees and checked the little box for testing it , locked the distributor down at 32 with a timing light hooked up. Thing is, as i slowly bring up the rpms the timing holds at 32 untill about 3500 rpm then it starts pulling timing and bouncing around like crazy. Have you seen the same thing? I was under the impression that once you checked the test box it locks the timing as what you set it for , in this case 32* Im running an MSD 6a ING box, I thought that might be the problem but i removed it from the loop (Back to stock) and it still pulls the timing. Any thoughts thare??? At idle its rock solid 32* HHHHEEELLLPPP!!!!

 

[10secTy]

Re: 4l80 big suff 3 woes

Do you have a msd distributor?

Nolan

Thanks Nolan, Harry Anderson is doing the final tune on the truck if i can get the bugs worked out. Now that i squared away the harness problem, i can move on to the last one. I was wondering how you sync'd the timing? I can seem to get it to hold the designated timing mark. I set the sync at 32 Degrees and checked the little box for testing it , locked the distributor down at 32 with a timing light hooked up. Thing is, as i slowly bring up the rpms the timing holds at 32 untill about 3500 rpm then it starts pulling timing and bouncing around like crazy. Have you seen the same thing? I was under the impression that once you checked the test box it locks the timing as what you set it for , in this case 32* Im running an MSD 6a ING box, I thought that might be the problem but i removed it from the loop (Back to stock) and it still pulls the timing. Any thoughts thare??? At idle its rock solid 32* HHHHEEELLLPPP!!!!

 

[autoaddictions]

Re: 4l80 big suff 3 woes

Msd pro billet distributor, Msd 6a box Msd Blaster coil. I by passed the 6a box it does the same thing.

 

[autoaddictions]

Re: 4l80 big suff 3 woes

OK im still dealing with a small timing issue but ive got it to run right regardless. For some reason i need to run 700 ms of inductive delay to sync my big stuff 3 computers timing. Any less than 700 it pulls timing. At 700 it stays put and runs like a raped ape. I drove her around all weekend put like 100 miles on it. I had to verify that HKS boost controler was doing its job so i richend up the fuel maps and laid into the gas. Whoosh!! waste gate spring must be a 12 Pounder it makes no less than 12 pounds, and with a small turn on the controller it did adjust fine. I can say that @ 15 psi and 16* of timing that baby halls ass big time. My AFRS where about 10.2 to 10.5 witch is a safe number for pump gas. Let me tell That PTE GTQ 72 turbo hits hard at about 4000 rpm and the truck is gone. Id say the trucks in the mid to low 11s as it sits. Hopfully with some more boost and race fuel ill hit my 10 sec goal. Its nice to finally be able to drive it alittle. Now i just have to start paying down my credit card!!! Update with video of some track runs on pump gas next!!