MSefi.com read only forum (Jan.15,2018)

i cant find where its at for the life of me!
i want to hook up my stock tach.
wheres the output pin (on the board) because i need to build circutry to lower the signal for my VW tach. (i have the circutry diagram, it just doesnt tell me the pin i need

thanks for the help!

The answer depends on what main board, processor, and code version you have.

Matt Cramer wrote:The answer depends on what main board, processor, and code version you have.

ms-1
v3.0 board
not sure what code where do i find that and ill post it too

If you don't know, ask the ECU. To ask it what firmware it has, you'll need the program portcheck.exe, which comes with most MegaTune versions, including the one on the DIYAutoTune.com website. You'll find it in the MegaTune2.25 folder. If you don't have a copy, download it here:

http://www.DIYAutoTune.com/downloads/tu ... tCheck.zip

Power up the Megasquirt and connect it to your PC. You do not need to open the case and should not put the boot jumper in place for this test. Close MegaTune if it's running, and run the portcheck.exe program. When this program starts, it will scan the available COM ports.

If the port it's scanning is not connected to a working Megasquirt, or it's on the wrong speed, it'll say "No connection made." If it's on the right port and right speed, it will give you the version of the Megasquirt firmware that's on the Megasquirt. Note that some Megasquirt firmware versions will look like earlier versions with this test - for example, 029V identifies it as 029Q. This is for backwards compatibility.

If you get a port where it replies with "S" or something else that doesn't look like a firmware version, this port is probably a fake COM port that echos back everything that's typed.