AWD 6MT TT build

phunk · 11-09-2021, 01:32 PM

I think you can make your own shifter position sensor assembly for the rev-match if you want to. The output is just 0-5v on 2 axis. Maybe you could simplify it with some microswitches and resistors to hit somewhere in the middle of the expected position ranges

1slow370 · 11-09-2021, 04:45 PM

Quote:

Originally Posted by phunk

I think you can make your own shifter position sensor assembly for the rev-match if you want to. The output is just 0-5v on 2 axis. Maybe you could simplify it with some microswitches and resistors to hit somewhere in the middle of the expected position ranges

The issue is the ecus calibration procedure and that the ecu sees it like a joystick with live x,y values. I thought I could relocate it externally but I would have to make a rotating and translation rod that moves and rotates the same amount as the main selector shaft and fit it between the shifter and the trans and room in the tunnel is already tight. There is also no room for the reverse gear speed sensor so that would need to be relocated as well and a new trigger wheel made to emulate the pulses of the gear teeth.

phunk · 11-10-2021, 12:49 PM

Quote:

Originally Posted by 1slow370

The issue is the ecus calibration procedure and that the ecu sees it like a joystick with live x,y values. I thought I could relocate it externally but I would have to make a rotating and translation rod that moves and rotates the same amount as the main selector shaft and fit it between the shifter and the trans and room in the tunnel is already tight. There is also no room for the reverse gear speed sensor so that would need to be relocated as well and a new trigger wheel made to emulate the pulses of the gear teeth.

I hadnt considered the calibration procedure, perhaps it could be skipped though. We planned to use the DCT controller to emulate the X/Y axis voltages for rev match, but so far have not bothered (revmatch isnt going to be able to hit target RPM before a preselected DCT shift, though it would probably be helpful when a downshift was not preselected), so I cant say if it would actually work or not.

What is the relationship of the reverse gear speed sensor? I dont know if I even realized there was one. I thought S-Mode was comparing engine speed from the crank trigger, to input shaft speed on the trans.

1slow370 · 11-10-2021, 01:41 PM

Quote:

Originally Posted by phunk

I hadnt considered the calibration procedure, perhaps it could be skipped though. We planned to use the DCT controller to emulate the X/Y axis voltages for rev match, but so far have not bothered (revmatch isnt going to be able to hit target RPM before a preselected DCT shift, though it would probably be helpful when a downshift was not preselected), so I cant say if it would actually work or not.

What is the relationship of the reverse gear speed sensor? I dont know if I even realized there was one. I thought S-Mode was comparing engine speed from the crank trigger, to input shaft speed on the trans.

There is a speed sensor that reads off one of the reverse gears teeth and is used by S-mode. Don't ask me how it's used but if it's not there I guarantee you rev match will be dead

11-09-2021, 01:32 PM	#1 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,669 Drives: 370 Rep Power: 974724	I think you can make your own shifter position sensor assembly for the rev-match if you want to. The output is just 0-5v on 2 axis. Maybe you could simplify it with some microswitches and resistors to hit somewhere in the middle of the expected position ranges FL 4Motion, JARblue, Rusty and 4 others like this. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

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