Autotech 10.129.020K-021 SCHRICK Variable Geometry Intake Manifold for Mk3 VR6 - OBDI & OBDII - Manual (Page 2)

15. Connect the electronic control unit as follow:
a) connect plug to solenoid valve
b) red cable to switched + (15)
c) black cable to earth (chassis)
d) blue cable to rev-counter input signal
The rev-counter input signal can be allocated to different terminals / leads for different vehicle types. You will have to
determine which is the correct terminal / lead for your vehicle
16. the switching point of this control device is programmed for an engine speed of 4000 r.p.m. at which point the rising
engine speed causes the plenum valve flap to open. The hysteresis is programmed for 50 r.p.m. so, that with falling engine
speed the plenum flap valve closes at 3950 r.p.m. To set another switching pint, the control unit has to be opened. The
chosen switching point can be set by adjusting the switches (Protected by a waterproof film) according to the attached
chart. After completion the switches must be sealed against water.
17. The battery may be connected after all electrical elements are properly connected, otherwise faults will be stored in the
engine electronics, which must be subsequently deleted by an authorized workshop.
18. Please note; Installation of the variable intake manifold will change the performance characteristics of the engine and
may therefore invalidate the vehicle registration documentation. A technical assessment at the responsible institution is
required.