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Discussion Starter #1
This is pretty straight forward, but I figured some people would like to see a preview before doing it on their own so here goes:
Parts:
I picked up a used 42DD set.
Included were:
VDO Boost Gauge
Tubing Kit
Wiring Kit
Perfect Match LEDs.
Tools:
Nothing special, you will need things to cut, drill, file, and punch holes with. As well as an 8mm socket wrench.
Prepare the gauge and vent.
1. Decide which vent you want to install the boost gauge and remove it by pulling it out. In my case it was the leftmost center vent. Also I had to remove the rear flap as that got in the way of the gauge.
2. Using a dremel or any other tool (I used wire cutters and some files), cut out the vent so that your gauge will fit in it nicely. Take your time, the plastic is soft and if you make the hole too small and force the gauge in, the sides of the vent will warp and look like ass.


3. Give your kids/pets entertainment so they leave you alone.

4. I didn’t like the outside of the gauge being silver so I painted it black. Cover up the face, and the back with masking tape and spray paint it. Pretty straight forward and a bit more time consuming but definitely looks better black.




5. Test fit the finished product. (You can see in this picture the warping, some filing took care of that)


Run tubing:
1. Remove the lower trim that is below the steering wheel, above the pedals. There are three 8mm bolts holding it. One in the fuse box, one on the left hand side of the wheel and one on the right, both behind small rectangular covers. You will also need to disconnect the wire running to the light bulb, and pop out the OBDII com port.
2. Drill or puncture a hole on the left hand side of the vent, and try to make it just big enough for the hose to fit through it.

3. Run your hose through it, you may need to guide it with your other hand so it goes towards the ground, leave your self a few inches in the vent.

4. Pop open the hood, remove the rubber seal that runs in front of the battery, and remove the top cover.
5. To the left of the brake fluid reservoir you will notice two rubber seals (circled in red, rear one already removed), one on the front fire wall, and one on the rear. Remove them both.


6. Now get down under the steering wheel, locate the opening and run your hose through it. The hole should be on the right hand side, near the very top. If you’re having problems finding it, run some string through it from the engine side so you can see where it comes out from.

7. Puncture a whole in the rubber seals, run the hose through them and put them back where they were.

8. Now you have two options for tapping into the manifold pressure to get the reading. One is the Fuel Pressure regulator, the other is the hose that runs to the N249 located at the very front of the intake manifold. This is the method I went with. On my other car I tapped into the FPR with out any problems, so either way is fine.

9. Connect the gauge to the tubing, different ways of doing this depending on what came with your kit, and then test it out.

Hooking up the electrical connection.
1. On newer B5s, the vents had electricity running through them to illuminate the vent switch, perfect spot to tap in. (On older ones your on your own, Id go for the light switch.) Red = positive, Black = Ground. Tap into those, and use electrical tape to cover it up after to prevent a short.

2. Enjoy your newly installed boost gauge:





Modified by TurboNasty at 6:33 PM 12-29-2005
 

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Re: DIY: Centre Vent Boost Gauge Install (TurboNasty)

you know..we like to spell centre the right way...Center
 

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Discussion Starter #3
Re: DIY: Centre Vent Boost Gauge Install (HarvVAG)

Quote, originally posted by HarvVAG »
you know..we like to spell centre the right way...Center

I thought this was an English speaking forum?
 

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Re: DIY: Centre Vent Boost Gauge Install (TurboNasty)

NICE!!!!! this DIY is sooooo much better than the APR instructions... i think i might do this myself now
http://****************.com/smile/emthup.gif
 

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Re: DIY: Centre Vent Boost Gauge Install (AudiRs2Porsche)

Quote, originally posted by AudiRs2Porsche »
NICE!!!!! this DIY is sooooo much better than the APR instructions... i think i might do this myself now
http://****************.com/smile/emthup.gif

go for it....it's fun and easy, should be a 1.5 hr mod tops.

excellent write up. glad to see there's more DIY people on here now.
 

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Discussion Starter #7
Re: DIY: Centre Vent Boost Gauge Install (20VTURBOSpoolMeUp!)

Yeah its definitly easy, and cant go wrong for $65cdn, especially since the APR kit goes for $199cdn here.
 

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Discussion Starter #9
Re: DIY: Centre Vent Boost Gauge Install (AudiRs2Porsche)

Is there enough room to run another hose through it? If not, try finding another.
 

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Re: DIY: Centre Vent Boost Gauge Install (TurboNasty)

use the hole behind the ECU box that the harness runs in the cab through. Then you can use the nipple on the end of the ECU box.
 

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Re: DIY: Centre Vent Boost Gauge Install (TurboNasty)

Quote, originally posted by TurboNasty »
Is there enough room to run another hose through it? If not, try finding another.

im gonna look and take some pics of some possible areas..... and take a pic of he problem..
 

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Re: (buffdaddy)

Thanks for the write-up...after reading this I have decided to finally get a gauge and cut one of the vents.
I have a couple of questions I was hoping you could answer. What are the perfect match LEDs you mention? Is this to color match the OEM lights?
I have been looking for cool gauges, and the 42DD looks the best, but not over the top impressive. OMARI makes nice gauges, but for $150...f that. I did find the following on VDO's website..
http://www2.vdo.com/vdo/end_co....aspx
Do you think I could use the perfect match LEDs with this gauge?
 

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Discussion Starter #15
Re: (Dimka)

Quote, originally posted by Dimka »
Thanks for the write-up...after reading this I have decided to finally get a gauge and cut one of the vents.
I have a couple of questions I was hoping you could answer. What are the perfect match LEDs you mention? Is this to color match the OEM lights?
I have been looking for cool gauges, and the 42DD looks the best, but not over the top impressive. OMARI makes nice gauges, but for $150...f that. I did find the following on VDO's website..
http://www2.vdo.com/vdo/end_co....aspx
Do you think I could use the perfect match LEDs with this gauge?


Yeah, shoot 42dd an email, Im sure they will know.
 

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Re: (TurboNasty)

I thought 42dd was the gauge model...you mean there is a shop called 42dd, or is it a forum member. I am not usually this clueless...really.
 

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Re: (TurboNasty)

Did the DIY boost gauge this weekend based on the instructions above (+others I have found on AW). I was most concerned with the fit and finish of the gauge in the vent - I like things to look semi-stock. I took a lot of time filing the vent and it is a perfect fit. The VDO gauge looks great - just have to get a special T fitting to get rid of the buzzing. End product looks awesome and with the matched red-lighting, looks like it came from the factory. http://****************.com/smile/emthup.gif
 

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Discussion Starter #20
Re: (upperlevel2120)

Cut with whatever you got then file by hand or with a dremel to get a good fit. If you **** up, there are more vents in the car, they're all the same
 
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