am i right to say the ecu can be accessed via a harness ?
if so, is there a computer program cheap/free and simple enough to use to access the ecu realtime info? can DIY?
guys....i just bought a RPM meter wanna install to my car...
i'm using BMW e28 + rb20DET
where can i get the RPM signal?
izzit from ECU?the 7th wire?Tacho signal?
i tried but failed....can't...
i tot my RPM meter...