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      12-13-2014, 05:38 AM   #1
OzJustin
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Brisbane P3 Gauge Owners - Help wanted

Calling any Brisbane owners of a P3 gauge who might be kind enough to assist me with installing the boost line.

I just purchased a P3 v2.3 gauge for my N54 135i and had no problems installing it except the boost line which looks to be a little beyond my limited mechanic know-how. All the guides and videos I've seen are for LHD cars so I'm not sure on the steps to route the line in the case of a RHD.

I understand I need to run the boost line from the harness in the driver's side footwell out through the plastic seal through the firewall and across the engine bay somewhere over to the passenger side to plug into the boost line feeding into the diverter valves.

Would any Brisbane member who has installed this boost line be willing to assist? I imagine it would take 30 minutes tops for someone who knows what they're doing (i.e. not me). I'm happy to come to you (located Brisbane Mount Gravatt area).
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      12-13-2014, 06:10 AM   #2
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Use a coat hanger to punch a hole in the grommet, then tape the hose onto it and push it through...

Ian PM'd me a few detailed photos of the route to secure the hose when I installed mine a while ago.. if I still have the PM I'll fwd it to you
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      12-13-2014, 09:34 PM   #3
OzJustin
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Quote:
Originally Posted by woosh View Post
Use a coat hanger to punch a hole in the grommet, then tape the hose onto it and push it through...

Ian PM'd me a few detailed photos of the route to secure the hose when I installed mine a while ago.. if I still have the PM I'll fwd it to you
Photos of the suggested route would be a good starting point thanks woosh.
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      12-13-2014, 11:21 PM   #4
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Quote:
Originally Posted by OzJustin View Post
Photos of the suggested route would be a good starting point thanks woosh.
Sorry seems that I have deleted that PM... you could try PM'ing Ian///M yourself, maybe he still has those photos handy
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      12-16-2014, 08:58 AM   #5
OzJustin
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All good thanks Woosh. Will checkin with Ian to hear his recommendations.

After a bit of digging these are the only two RHD install photos I could find via google. You can see that it runs along the top cowl and then down through the weatherstrip like the LHD install procedure.





Based on my current thinking there seems to be two ways to do the install (see my below image).



1) I could run up along the cowl (red install line) which should minimise heat on the boost line. I assume water drains down either side of the cowl so I shouldn't have any issues running it loose on top of the cowl like that?

2) The second options is to run it on the inside of the car (blue install line) below the dash from the driver to the passenger side and then out the alleged rubber grommet on the passenger side and down to the diverter valves. This would further minimise any heat issues and keep the boost line virtually hidden and protected apart from the very small section from the grommet, through the weatherstrip and down to the diverter valves. If I was to remove the lower dash cover on both sides does anyone know if there is line of sight between the driver's and passenger's footwell area to feed the boost line? I'm not interested in tearing apart the dash or centre console just to run the line and would probably go with the red line option otherwise.
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      12-16-2014, 10:26 PM   #6
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Mine runs where the red line is but under the cowl. It is ziptied to some other wiring looms along the way. I'll grab some pics for you.
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      12-16-2014, 11:51 PM   #7
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Here you go, it's a N55 but the route should be similar.


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      12-17-2014, 12:34 AM   #8
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^yep, that's pretty much the route... IIRC it was placed inside the expandable conduit just underneath / in front of the cowl
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      12-17-2014, 07:55 AM   #9
OzJustin
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Thanks for the photos and recommendations guys.
I'll have a closer look at my engine bay over the next few days and have a crack at it. Under the dash and through the passenger firewall is still my pick if it can be done simply.

So you both completely removed the cowl to install the line underneath it? No issues with heat/melting? My bonnet is very hot to the touch after only a brief drive so I shudder to think what the lines would be exposed to.
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