This is no way some master guide!
I wanted my engine bay to look a little prettier, and smooth out the intake boot bend compared to the stock one - which is also normally becomes fragile/torn.
There are 2 options.
1. Buy the proper silicone boot with ICV duct on, but this is about £80/90!!
2. Make your own using a 90 degree silicone bend
The finished result
Problems you come across.
You have to drill a hole in the silicone to make a connection for the ICV hose, i also cut about 15-20mm off the length of the bend where it connects the throttle body. or it wont fit in.
What you need to order
90 degree bend £9.99
Silicone Hose Coupler 76mm 3" 90 Degree Elbow Blue | eBay
some nice 76mm t-clamps - about £2.50 each
could just get cheap jubilee clips, or re-use your existing ones
1 x 3" 76mm 79mm - 87mm SILICONE HOSE CLAMP T-BOLT | eBay
22mm brass compression fitting £4.39
BRASS plumbing pipe compression Tank connector,dif size | eBay
a 22mm olive £1.99
PLUMBING FITTINGS 22MM BRASS OLIVE COMPRESSION RING X 5 IN NUMBER | eBay
a short bit of copper pipe £2
NEW 22mm copper gas plumbing pipe/tube x 100mm 4" lengt | eBay
a short bit of 22mm hose (can be silicone vacuum or whatever you want - ID is 22mm) - £5 ish
Silicone Vacuum Vac Hose Pipe Tube 10mm 13mm 16mm 19mm 22mm 25mm I.D Available | eBay
Firstly remove your airbox, remove wires off MAF and undo jubilee clips off intake hose.
Remove the MAF and take off the intake boot, pulling out the ICV connection at the bottom.
Line this up above your silicone boot and trim off the length (i used a dremel with a cutting disc on)
Next you need to drill a hole in the silicone boot.
I drill a small pilot hole then used one of these - 22mm Flat Drill Bit from Aerial Shack Woodspade Drill Bit Forge Master and it made a nice hole.
This is where the compression fitting comes in.
Fit in the hole and do up nice and tight, i even used a little gasket sealer on it.
You will then have this
next fit the copper pipe and do up - trim the copper pipe down so it is short.
Fit the 22mm silicone vacuum hose to copper pipe using a jubilee clip, then connect to the ICV black connecter, again using a jubilee clip.
Connected to car showing ICV connection
Next is the reversal and connect all up
Comes to around £25 ish or buy this for SAMCO SILICONE INTAKE HOSE - BMW 318iS E36 | eBay £81
Any questions, fire away!
The copper bits are probably better to get from a merchants or a local plumber - buy them a pint