Installation Guide - Courtesy of Former_Boosted_IS @ E90post
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You will need the following items for the
installation:
- 3/8" Socket Driver
- 3/8" Socket Exension
- 8mm Socket
- 10mm Socket
- 5mm Allen Head
- Flat-head Screwdriver
- Box Cutter Blade or equivalent
After removing the micro filter cover, cowl, and
ECU covers, you will need to remove the engine cover. It is held on by (4) 5mm
Allen head bolts.



Notice the passenger side bolt is recessed a bit,
so you will need the extension to remove this bolt.

With the engine cover removed, you have full
access to the PCV inlet/outlet for the installation of the BSH OCC.


The first item of order here is to remove the
inlet and outlet PCV connectors. The driver's side connector has a wire harness
that needs to removed first. The actual PCV connector is held on by a clip on
the side toward the nose of the car and the side toward the rear of the car. Use
a flat head screw driver to carefully pop this connector out.

The passenger side PCV connector has a square
securing clip. You will need to insert a flat head screw driver to release these
pops and remove the connector.

Here are the connectors removed from the car. Passenger side below.

Now it is time to assemble the BSH Billet
Aluminum fittings on the PCV inlet and outlet connectors. The threaded BSH
adapter goes on the passenger side connector. Insert it into the PCV connector
and then install the brass elbow into the connector.

Insert the push lock hose onto the brass fitting
and secure using the included clamp. You can cut the hose later, but this saves
you from trying to secure the clamp in tight quarters.

Next insert the driver's side BSH adapter into
the PCV connector. This has a locking tab to insure the connection remains
secure. The locking tab will slide over the lip on the PCV connector and is
secured with the Allen screw.

Now, lets get the BSH catch can and bracket assembled. Use the included screws
and washers to secure the bracket to the catch can.

We need the can installed so we can measure and
cut the hose, so that is our next order of business. The BSH OCC is mounted to
the bolt near the positive terminal under the hood. This nut/bolt simply holds
the heat shield down, so it should be easy to identify. Mount the can/bracket as
you want and lock it down.

Now you can measure the length of hose needed and
cut it using a razor blade or box cutter. There is enough hose for some slack
and it is better to leave more hose then come up short. I put the engine cover
on, so I could simulate the exact setup before marking and cutting the hose.
After you mark and cut the hose, insert each hose into the PCV inlet & outlet
fittings. It is push lock, so there are no clamps needed. Next insert the PCV
inlet/outlet back into their mounting locations and re-attach the wire to the
driver's side connecter.

Connect the hose to the catch can.

Finally, place the engine cover back on the
engine and route the hose over the side of the cover.

Button everything back up in the opposite order.
One thing to note, when you are inserting the passenger side rear bolt on the
engine cover you should use tape to hold the bolt to the Allen head socket so
you don't drop it. If you do, it is belly pan removal time that will add 30
minutes to the job.