Thread: Any way to have multiple tunes and switch between them, without reflashing?

the problem is the pcm has what? 200 wires leading to it? now make that switch, i dare ya.

once a pcm has been ran in your car and its security is learned and it didnt ask for a crank learn, or you did the crank learn its golden forever. you can take them in and out back and fourth all day long, the car will just fire up and run like it should.

Originally Posted by ScottyBDoggs

the problem is the pcm has what? 200 wires leading to it? now make that switch, i dare ya.

once a pcm has been ran in your car and its security is learned and it didnt ask for a crank learn, or you did the crank learn its golden forever. you can take them in and out back and fourth all day long, the car will just fire up and run like it should.

Originally Posted by ScottyBDoggs

the problem is the pcm has what? 200 wires leading to it? now make that switch, i dare ya.

once a pcm has been ran in your car and its security is learned and it didnt ask for a crank learn, or you did the crank learn its golden forever. you can take them in and out back and fourth all day long, the car will just fire up and run like it should.

I guess if you're trying to use some switches you found at radio shack, yeah, you'd have issues... but they do make switches with enough connections that work properly for the application. Or you can just program a PLC with some relays, even an old Micrologix can do this quite easily. I've programmed them for similar functions.

I'm not saying it would be practical, but most automation supply stores would have what you need to build a system.

As far as the CASE learn... that's good info, it was my (mis)understanding that a CASE learn was required any time an engine was run/turned over with the PCM disconnected.


Edit... should have read that J57ltr already covered the PLC bit.