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

gui67, I believe that statement is incorrect. From what I know, the ISS reads the input shaft which is thechnically the output of the torque converter. If there was no slip in the converter, the reading would be identical to the tach signal. I believe GM used this sensor along with th VSS to determi...

Ok. I will have a look at that. I mangaged to finally load that new program you sent into the gpio. I've been driving it for 2 days now and the weird downshifting problem seems to be fixed. Thanks.

Also, can I change my tach input signal from the ISS to an msd 6al output. I know there is a special circuit to do this for the megasquirt board but i'm not sure of the gpio board. thanks,

I am using the ISS as a tach signal. I Just realized that the input shaft does not turn when stopped in gear. (my bad) Any ways, I am comparing the tach signal to my autometer tach which has been tested to be accurate. I have been playing around with the shifting some more and can now duplicate this...

Hi Lance. I was going through my datalog and I can't seem to find where the load value jumps up to 6552.6. Also I found something else that is weird. My rpm is inacurate. It is reading aprox 25% higher then it should. I managed to temporarily fix this by setting the pulses/revolution to 40 instead o...

Hi Lance. I am not using can . I have a map sensor to calculate load

sorry. here you go. the downshift happens at 194.9 seconds

Hello. I currently have a 4l80e setup that is driving me insane. I'll be driving along in 4th gear on the highway and all of the sudden, BAMM. it downshifts to 3rd. if I don't do anything it will stay in third. If I put the shifter in neutral and then back in 4th, it will drop to 1st (sucks when you...

Hi there. I just built my first megashift and am planning on using it with a 4l80e. I have some questions that I cannot locate the answers for and was hoping someone can help. - Do I need the range sensor on the side of the transmission or does the mshift input only from the pressure manifold? - I a...