ditchdigger
1971 850 Berlina updates:
Idle control Aug 15, 2010
Unfortunately the coolant operated idle booster on the quad throttle body doesnt quite seem to work. So I whipped up a new throttle plate bypass. The brass screw in the side and the 3/16” hose barb is base idle speed and the large 1/2” port will go to a bosch aux idle valve from a CIS VW to handle cold idle duties.
