GrimmSpeed Electronic Boost Controller EVO - Manual (Page 3)

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peed 3
Now able to explicitly control the opening and closing of the wastegate, the ECU is able to
control boost with greater precision and reduced response time.
Installation for EVO 8 and 9:
1. Remove factory airbox. Locate boost control solenoid on driver side frame rail. Unbolt
factory solenoid. Unplug the electrical connector and vacuum lines.
2. Install GrimmSpeed bracket and solenoid while reusing the factory bolt.
3. Hook up vacuum lines. See Figure 2. Port 3 connects to a high pressure boost source (there
is a vacuum nipple on the turbo compressor outlet). Port 2 connects to the internal wastegate
actuator vacuum nipple and Port 1 should be routed back to the intake (where the factory
BCS mounts). It is recommended that a plastic zip tie is used to secure vacuum lines. The
electrical is plug and play with the supplied connector. Tuning: WGDC controls the actuator /
turbo. Tuning to the WGDC is required (approx 30% reduction in WGDC)