MSgpio.com read only forums (Jan.15,2018)

Hello Shaodome, I also have a 4L80e, I had problems with the OS and IS speed at the beginning, but not as bas as you have. I ended using the dual VR board from Jean to get the right speed. Andrew did the same on his Ford transmission. Now it is OK. I put the board in the MSGPIO casing, using unused...

OK you can see the issue in the first part of the log. Honestly, in the frenzy that the dyno was I MAY have had it in 4th :0/

That being said, the VSS looks like heck. It's very choppy at high speed. Suggestions to look at here? It's a 4L80e

Rev limit checking was disabled for the dyno. I do have a log of which I can post it tonight and the shift buttons were not connected. Was I correct in my logic? If I put the shifter into 3rd gear, should it NOT go into 4th, even in auto mode given provided rev limit checking was off. What I really ...

Perhaps this is a misunderstanding of the logic or I didn't see it in the docs.... When tuning the car on the dyno, I would like to just hold the car in 3rd gear for the full pull. Letting off the throttle at the end of the pull resulted in the car shifting to 4th due to the shift table layout even ...

I verified the sensor works. I just ran some alligator clips from the senor output wire to Analog 3 input on the MS3pro and set it up in generic sensors. It works as expected. So that's checked off the list. I flashed the attached code and logged it for you. There are two logs. One that was just wit...

I did measure the sensor and it is putting out voltage around 1v at idle and closer to 2v with some revs up.

I'll try this for you tonight Thanks for the prompt reply on this lance as always!!!!!

OK, that line pressure table is specific to that digikey sensor, which is basically hard coded. Gotcha.

I'm still confused though as to why it didn't work when I put in the 2 point calc?

Just thought about something....If I change it to the use two point calcs, I'm seeing ADC? an ADC count of zero is zero psi, an ADC count of 1024/2 = 512 is 250 psi. (note the 250psi at a adc of 512, which I think is what it should be on the 500psi sensor) 250/512 = 0.488 * ADC, which would be even ...

OK, played it it some more tonight.... I didn't have the line pressure setting to "USE TWO POINT CALCS". Instead it was on USE TABLE. Once I changed that I started to see some life in the line pressure gauge. I'm using a 500psi sensor that reads on the curve found here: http://www.internet...

Thanks Lance. I noticed something odd about manual low....when I moved the wratchet shifter all the way down to what should be 1st, the gear indicator still showed 0. It definitely was in first as I was able to drive the car and it didn't shift out of first, but then when I wratched up to 2nd, the ...