- Wed Dec 30, 2020 1:41 pm
#47384
Just to give some input to this problem. The required duty cycle will be dependant on the position of the idle screw in the throttle body. Somewhere between 60-90% DC is a usual band on the stock NB engine. This one:

(credit: www.miata.net)
I've been experimenting and it doesn't seem to make any noticeable difference what the particular required DC is. I've played around with my idle screw a bit and right now the valve moves from 30 to 15% DC during warmup when running open loop.
Valve frequency should be 120Hz

(credit: www.miata.net)
I've been experimenting and it doesn't seem to make any noticeable difference what the particular required DC is. I've played around with my idle screw a bit and right now the valve moves from 30 to 15% DC during warmup when running open loop.
Valve frequency should be 120Hz