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GrimmSpeed Mazdaspeed Electronic Boost Controller User Manual

Page 5

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7. Disconnect brake booster vacuum line for easy access to solenoid.

8. Locate the factory boost control solenoid that is bolted to the turbo. Disconnect wiring
that goes to it. You may choose to remove the factory solenoid or leave it installed. Unplug
the vacuum lines that go to it.

9. Plug in GrimmSpeed boost control solenoid wiring connector into factory wiring harness.
Prevent wiring from contacting anything sharp and do not allow wiring to be pinched.