problems with global spark adder

[jruppert]

For whatever reason, whenever I do any changes to the global spark adder or going into the spark table and change settings, the car refuses to start. Once I roll it over and it wont start, I have to go back and shut tweecer totally off and press gas down while rolling over. This is strange. I have used the tweecer in my Mustang for 3 years now and never had issues like this.

 

[Axianator]

As I'm sure you know, minor adjustments to the global spark adder and/or spark tables are not enough to prevent your car from starting. That said, I have a few questions to pose:

- Does your EEC exhibit any signs of FMEM (constant fuel pump and fan operation) when you turn the key to KOEO?
- Have you tried loading a copy of the factory '94-'95 D4U1 image onto your TwEECer to see if the engine will start/run?
- You said in another thread that you resolved your strategy display problems. Which calibration file are you using now?

 

[jruppert]

Thanks for the reply.
I am using D4U1 strategy along with a file named, 'LPM_Func' that I found through shoforum. I have also used a 94 ATX bin with the same results.
I have noticed that sometimes when I write to tweecer, after the 'complete' the fan will turn on. I am not hearing the fuel pump but it may be on also. I know in my mustang if I set the wrong strat, it will turn on the pump and fan. This seems to be a different problem. Also, I can write to a setting, and drive. It will run fine. Then move to a different setting, change spark, hit write. The pump will turn on as it writes. At this moment it will not start. It also will not start in the previous setting that was already working. I have to switch to off and press gas and roll over. It may take 10 rolls before it fires. It is rather strange...

I am also noticing in datalog that some of my values are not properly reading. Maybe I have a problem with the connection??

 

[Axianator]

Thanks for the reply.
I am using D4U1 strategy along with a file named, 'LPM_Func' that I found through shoforum. I have also used a 94 ATX bin with the same results.
I have noticed that sometimes when I write to tweecer, after the 'complete' the fan will turn on. I am not hearing the fuel pump but it may be on also. I know in my mustang if I set the wrong strat, it will turn on the pump and fan. This seems to be a different problem. Also, I can write to a setting, and drive. It will run fine. Then move to a different setting, change spark, hit write. The pump will turn on as it writes. At this moment it will not start. It also will not start in the previous setting that was already working. I have to switch to off and press gas and roll over. It may take 10 rolls before it fires. It is rather strange...

I would first make sure that your J3 connector is thoroughly clean, and then ensure that you're using the D4U1.bin and D4U1.dat files from Josh's TwEECer page as the basis for your tuning changes:

http://www.shonutperformance.com/D4U1.DAT
http://www.shonutperformance.com/D4U1_BB.bin

I am also noticing in datalog that some of my values are not properly reading. Maybe I have a problem with the connection??

Unfortunately, there are still a few data logging errors with the D4U1 strategy under the current version of CalCon, the fixes to which will have to wait until Mike Glover can dedicate the necessary time to work with me to get the registers fixed.

Out of curiosity, which CalCon registers are giving you problems?

 

[jruppert]

At one point, my datalogging was working. However now I am having issues with MAF Volts, TPS, Injector PS 1 is reading some ungodly high number, and I believe 2 is reading 0

I have been doing some searching and found that you offered a file to a guy on here but he ended up having some tranny issues. I am currently trying to firm up my 1-2 shift as well. I have 2 issues. First, if I take off nice and easy and let it shift around 30 or so, it wasnts to ****. It acts like its trying to shift but ends up being, **** **** shift. I had an issue with WOT shifting on 1-2. I did change the curve somewhat at top on the TV pressure 1-2. It took care of the slop at WOT. I shifts great around that 6500 area. I hope I didnt go too far with it??

I will check out the D4U1.BIN file you suggested.
I am already using the D4U1.DAT from that site.

 

[Axianator]

At one point, my datalogging was working. However now I am having issues with MAF Volts, TPS, Injector PS 1 is reading some ungodly high number, and I believe 2 is reading 0

Unfortunately, all of the broken data logging registers you have listed are known problems that are awaiting fixes from Mike. Out of curiosity, did your data logging troubles seemingly start at randon, or did they ensue after upgrading your TwEECer software?

I have been doing some searching and found that you offered a file to a guy on here but he ended up having some tranny issues. I am currently trying to firm up my 1-2 shift as well. I have 2 issues. First, if I take off nice and easy and let it shift around 30 or so, it wasnts to ****. It acts like its trying to shift but ends up being, **** **** shift.

Just to clarify - are you referring to a jerky 1-2 shift at around 30 MPH? I assume this jerky shift is accomplished automatically through increasing throttle application (e.g. you're not holidng first gear and then manually shifting into second)?

Also, have you modified any of the values in your 'Dynamic TV Pressure 1-2' function?

I had an issue with WOT shifting on 1-2. I did change the curve somewhat at top on the TV pressure 1-2. It took care of the slop at WOT. I shifts great around that 6500 area. I hope I didnt go too far with it??

Keep in mind that you can also fatten up the top two load rows of your Engine Torque Table to increase the constant, non-shifting (or "static capacity") line pressure within the transmission and, in turn, firm up your shifts. Depending on your tranny's health, a value between 350-400 placed in the top eight cells of your Engine Torque Table (those above 2,000 RPMs and in the 80-95% load row range) should help to close the gap between your static capacity and dynamic shifting line pressures, resulting in a quicker, more decisive shift and lessening the chance of clutch slippage or kick-down runaways on hard cornering and full-throttle downshifts.

 

[jruppert]

yes, I am referring to the jerky 30 mph shifts. currently, the file that I am using is one that I believe you edited for someone on here. The file is, LPM_FUNC090505.ccf

After writing this file to tweecer, the car seems to run a lot better. It has much more pull then previously. As far as dynamic tv pressure 1-2, the only thing I can find and that has been modified is, 'tv pressure 1-2'. I have modified it more then what you had done. It definitely shifts much more firmer at WOT then 30mph. WOT is shifting at 7000 rpm.

I have no touched 'Tranny Torque Table'. I wasnt sure what it did. Although I can see that it has been modified from the original D4U1 file. The numbers you refer above 2,000 and above 80% load are 800 for each cell.

As far as overall tranny health, I would imagine that it isnt as good as a new rebuilt tranny. However, I do not have issues with the tranny constantly slipping. WOT 1-2 shift seems to be fine and the 30 mph **** is occasional as well. I do not notice any issues with 2-3 3-4 gears.

I can send you the file that I have if you wish.

 

[hawkeye18]

Not to bump an old thread, but where might this file be located? I know there are a few files on shoforum, how do I go about finding them?

 

[Axianator]

yes, I am referring to the jerky 30 mph shifts. currently, the file that I am using is one that I believe you edited for someone on here. The file is, LPM_FUNC090505.ccf

After writing this file to tweecer, the car seems to run a lot better. It has much more pull then previously. As far as dynamic tv pressure 1-2, the only thing I can find and that has been modified is, 'tv pressure 1-2'. I have modified it more then what you had done. It definitely shifts much more firmer at WOT then 30mph. WOT is shifting at 7000 rpm.

Glad to hear Alex's calibration is working for you, especially considering that it wasn't tailored to your specific car.

I have no touched 'Tranny Torque Table'. I wasnt sure what it did. Although I can see that it has been modified from the original D4U1 file. The numbers you refer above 2,000 and above 80% load are 800 for each cell.

If you're seeing values of 800 in the top two rows of your Torque Table, then your D4U1.DAT file has not been installed correctly. Make sure that you have the latest data file from the TwEECer page on the SHO NUT website and then install that file in the Data directory of your TwEECer installation (typically 'C:\Program Files\STKR 1.30A').

I can send you the file that I have if you wish.

Given my original offer of help, you can send it to me or post it here if you would still like opinions on it's content.

Not to bump an old thread, but where might this file be located? I know there are a few files on shoforum, how do I go about finding them?

Depends on which files you are looking for. Although I probably have many of the files in question, I am not prepared to release any of those files at this time due to the one-off circumstances surrounding their creation. Once I've made some progress on the documentation front, I shoud some time to get a bead on the details behind my tuning service, at which point I will probably release a batch of baseline "cookie cutter" files that people can examine and/or use on their own setups.

In the meantime, post up whatever files and/or questions you have and one of us will chime in with our two cents.

 

[jruppert]

It has been a while since this post but I have another question. I seem to have lost the calibration file LPM_FUNC090505.ccf

I have recently rebuilt my engine and transmission and of course the jerking 1-2 shift is gone. It may be because of the Superior shift correction package. Does anyone know where I can get this? I have done a search on here but only brings up this post. Thanks