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

Spag,

What I meant was remove the waxstat and graft on an idle control actuator from a different vehicle. Somebody somewhere (Imp Club forum, I think) mentioned a Ford Fiesta IAC actuator. I guess that's the stepper motor.

I'd need to check that an IAC control function is available in MegaSquirt ...

Spag,

You might be onto something there, with that vacuum and solenoid idea. I need to have another look at the TBs. Mine also have the shaft with the fingers on operating an air bleed in each barrel. There is a waxstat for cold start air bleed. Maybe the latter could be retained for cold start ...

I have bought a TB setup from a 2002 Honda Fireblade CBR 954. I plan to fit this onto my 1966 Singer Chamois (Hillman Imp) sprint car - 930cc, OHC, full race tune, ~90bhp plus.

My question is how do these TBs operate at idle? The butterflies appear tightly closed when the throttle cable is slack ...