Megashift working out the bugs

[gnx412]

Hello name is Joe I have successfully built and installed megashift in my 90 Deville controlling a 4t65e. so I have a few questions and I hope someone can help and please bear with me I am new to using forums. From tcm build to harness to cramming a trans that doesnt belong in a car to hitting the road it all worked out pretty good, but for some reason when I try drive aggressive megashift will pop itself into manual mode and I have no idea why. I since wired the upshift and downshift in permanent force auto position just for tuning and testing purposes but IT STILL bugs out when I get feisty on the pedal. Please help project came so far hopefully this hiccup is a small one. I dont have a datalog yet but if necessary I will try to get one soon. I think my coding is version 5101.ini

[jsmcortina]

Perhaps consider running the "Microsquirt" trans firmware.
http://www.msextra.com/product-range/ex ... n-control/

James

[gnx412]

Hey thanks for the info James just wondering if I download that is that compatible with my GPIO 2.10 built as 4L80E. And I would also wonder if the settings that I have now like the shift tables and all the settings that I have tweeked still be usable? The reason I went with that build is another gentleman used an old suburban TCM for his 4T65E swap in a Buick so I opted for the megashift considering all of the settings and features it has with the future plans of a piggyback megasquirt ECM. I also noticed that the software will not let me set rev checking for some reason is it possible I may just have some corrupted software and need to recode the unit? The car is currently blocked in so I may have to wait until the weekend to get a datalog which I know is crucial. I would love to help out anyone else who is bold enough to do a swap like this. It was a daunting task, I had to make custom axles, mounts and fool my ECM into thinking my old 440T4 is still there with some relays. The speed sensors are not compatible either so that is a whole other rig I made for that to work. The car if I didn't mention it before is a 1990 Sedan Deville with a 4.5 V8 and if anyone is asking why modify that car, because most likely no one else would lol

[jsmcortina]

Hey thanks for the info James just wondering if I download that is that compatible with my GPIO 2.10 built as 4L80E.

Yes. Do take a look at the included manual.

And I would also wonder if the settings that I have now like the shift tables and all the settings that I have tweeked still be usable?

No, entirely different settings are used. However, it is known to work well on many 4L80E installs since 2009.

James

[gnx412]

Thanks James I looked at the manual for the new firmware looks more refined I may have to wait a few days before I mess with it but will probably give it a shot I'll post results!

[gnx412]

Ok so as suggested I reflashed the TCM. That changed everything drastically and not for the better the tuner interface changed and nothing seemed to be working, tach vss load stuff was different. So I reflashed to megashift 5.102 and it seemed more familiar but now tach vss and many other things went haywire PLeASE help I drove this car for a week on 5.101 almost perfect other than the random manual mode popping on now its useless. Is it something I did, how do i get it back to the way it was before. I doubt any hardware is damaged the only thing that was done was reflash and was done sucessfully so what could have gone wrong?

[jsmcortina]

Yes, the two firmwares are totally different and have different tuning interfaces.

I've not used the MShift firmware, so I can't really help there. However, did you re-load your tune after re-flashing the firmware?

If you can be more specific rather than "haywire" it might help.

The Microsquirt trans firmware is known to work well on 4L80E, 4L60E and more.

James

[gnx412]

Well I did get pretty familiar with tuner studios thus far and What I mean by haywire is my tach and vss was inoperative, the pc solenoid was jittering from 80-100%randomly and as far as I can see my settings were set for it to be non can as it was before a standalone. Again before the code change vss was accurate shifting was stable tcc was working load was good (tps based) As far as software and computer stuff goes I am not computer illeterate but by no means great and despite that the first time I loaded the code after it was built all went well and I figured all out but possible I am missing something Hope its reversable it was almost done And now reloaded my old file and the tach vss and pc% doing all the before mentioned

[jsmcortina]

Did you reload you tune (MSQ)?

James

[gnx412]

Yes in fact it then asked if I wanted all of those setting that I had. And of couse I said yes they were all there and it even said 5.101 at the top again trans temp was reading and load was reading but differently said short load as before was just load I pulled the fuses as was directed but during one reflash I forgot hope it didn't fry anything Maybe I should pull connector at trans? And just to settle the mind all of my wires are very organized ,neat, fused ,heat ,shrunk and in loom

[gnx412]

Ok I got my old code to work for now, turns out some user error as I'm sure was suspected. Apparently the first code I actually had was a 4.9***and I was loading a 5.1** thats is why stuff looked so different that file I must have downloaded after initial flash fooling around and never used it. The original was in a different folder. At least I'm at square one and can drive but still am open to updating if it really is better just have to research and study more before Don't really know why it behaved as it did when reflashed if it works so well with whats there now must be settings.

[gnx412]

So searching and studying and now is it possible that the gpio jumper header is not configured to the trans firmware you suggested? Maybe all the sensor inputs were just going to the wrong pin on processor for the different firmware. How would I know. Is there an ampseal to processor pinout for this firmware? It seems many people on the forum have success with the this firmware

[jsmcortina]

I assume you are referring to the "Microsquirt Transmission" firmware? That's designed to work with the GPIO standard wiring once you select "GPIO" as the hardware in use.

If you want to give this firmware another try, please do. Be sure to follow the setting up instructions in the PDF manuals that are provided with the firmware.

When you are ready to ask more questions...


James

[mickeymarrows]

I think you'll find you'll get much more help (no offence to James!) if you post in the Megashift forum: http://www.msgpio.com/forums/viewforum.php?f=4

[jsmcortina]

I think you'll find you'll get much more help (no offence to James!) if you post in the Megashift forum: http://www.msgpio.com/forums/viewforum.php?f=4

This topic is discussing both firmwares... one gets support here, the other at the other place.

James

[mickeymarrows]

This topic is discussing both firmwares... one gets support here, the other at the other place.
James

And that was my point James The OP has a problem with Lances Megashift firmware running on a GPIO and he clearly won't get any support for that on this forum...

[gnx412]

Hey I Appreciate any and all help and will consider all options. I will post to the other forum but will keep James's suggestions also as it may help me in the future, all of these guys seem super smart and I want to do more with megasquirt its cool stuff. And as far as the microsquirt trans firmware I did have gpio selected and also 4l80e since thats the build format for the board. That is why I didn't even datalog as I couldnt get anything to work despite looking everywhere in that program to see if it was a matter of simple settings. So again thanks to all that take the time to answer!