I contacted Edge today to ask why it doesnt work or if the slip% works on a manual trans. All he told me was that i would see N/A on the screen. And it doesnt work with manual. Couldnt really tell me why. Can anyone here tell me why? Thanks.

 

Because modern automatics have tach outputs on various internal parts of the transmission to measure slip. You should always know if your clutch slips on a manual by feel

Andy