Editing Z31/boostcontroler php (section)

=== Procedure ===

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Open the hood and locate the wastegate from above. It’s a brass-colored cylinder located almost directly under the A/C compressor.

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From the Factory Service Manual page, Nissan conveniently located the wastegate hoses facing downward. Fortunately, both ends are close together.

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Use needle-nose pliers to loosen the hose clamps and remove the J-shaped hose at the bottom of the wastegate.

Reach the line from under the car

Line removed

* Your boost controller will have at least two connections: one from the pressure source and one to the wastegate. Connect these to the locations where the J-shaped hose was removed.
* Electronic controllers also need a source of manifold pressure. Insert a T-fitting into the vacuum hose going to the fuel pressure regulator and run a line to the controller/stepper motor.
* Once everything is connected, start the car and check for any boost or vacuum leaks. Use a boost gauge to fine-tune the controller — never adjust without knowing PSI output.
* To modify the pressure relief valve on the front passenger side of the intake manifold, stiffen the spring, replace it with the non-turbo plug, or use an aftermarket relief valve based on your desired boost level.

Hope this helps with Boost controlers and the installation of one.