I was wondering if anyone has a write up for an aftermarket boost gauge with an electronic display. And a write up for installing an aftermarket BCS from prodrive.Both for '04 wrx. Thanks.
For the gauge: Put a T connector off the vaccum line attached to the top of your BPV. Connect the electronic sensor to the T and connect a new hose to the BPV. Run the sensor wire into your car's interior space. Then follow instructions for the wiring as per the gauge instructions.
As long as you can figure out which port on the Prodrive BCS goes where, the install should be almost the same as the GMBCS install. Shibbs did a good write up here.