Digital idle control for CIS
 

I've came up with the idea of retrofitting an idle stabilizer valve to the hoses used by the decel valve of my CIS car.

Having experience with digital controllers, I would build a control box accepting inputs from RPM, oil temp and throttle position and driving the stabilizer valve in order to maintain a steady idle during normal operation and a fast idle for cold starts.

This would enable me to ditch the lever accelerator by the handbrake, which is a bit of a pain in my 74'...

Has anyone tried this before ??

I haven't done this but I'll be keeping an eye on this thread.

Good Luck...

i just discovered the volvo idle control system. this would be easy to adapt to a 911. http://forums.pelicanparts.com/uploa...1383369295.jpg

this pic makes it more clearhttp://forums.pelicanparts.com/uploa...1383369619.jpg

Thanks. It can be done, but i think it's not worth it, specially as i dont have a/c.

More appealing are the possibilities of a digitally controlled wur, that i'm currently working on.

greetings,
you might take a look at the megasquirt ECUs. I adapt ITB/EFI systems to the 911 engine and have used these systems successfully to control fuel, ignition and Idle air control, etc.

koz77911's channel - YouTube

regards...............and good luck with your project.

Al

i try to get away form electronics for reliability.

why not just update to a newer CIS?

You could retrofit a 76 or later CIS system for less than $200 that would eliminate your hand throttle, making it totally automatic. I've done it and it isn't that difficult.

Actually, it's my idea of a "fun" project.
But there are millions of CIS cars out there (not Porsches, mind) and sooner or later the supply of WURs will end... or maybe not, Bosch started remanufacturing some models.

newer cis? this seems like a great solution to the idle issues 911 owners have with the AAR being a purely mech device. its only good for cold start and closes pretty quickly. this system, which can be had at pickurpart, seems a logical upgrade.

newer CIS
 

I think that newer CIS is a contradiction in terms.....the newest version is 30 years old.