A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Tap for Boost Gauge

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Old 08-25-2000, 09:36 AM
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Default Tap for Boost Gauge

I am reading over the boost gauge directions, and they specify 2 different locations to tap for boost.
1. on the back of the engine block, it reccomends using this for pre 99.5 A4
2. in the front of the engine block. For 2000 and later A4

I haven't opened up the hood yet to take a look, but wanted to see some opinons on the reason for this...Anyone with a 2000 done this? And where did you tap?

Thanks<p><A href="http://registry.audiworld.com/audi/registry/details.asp?car=4586">
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Old 08-25-2000, 09:47 AM
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Default Supposedly its a black kinda braided looking line comin to the manifold in the front of the block

I will know for certain tomorrow when I get mine installed by cmh<p>- <a href="mailto:adhand@san.rr.com">Anand Dhanda</a>
'00 A4 1.8TQMSx Silver/Onyx
Wett 1 Bar, F/R Fog Mod, Clear Corners,
S4 Grille, Jamex Air Filter, LLTek Shift ****,
Euro Plate "2PE C ME", Westach Boost Gauge
Old 08-25-2000, 10:01 AM
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Default Let me know how it turns out. i am doing mine on Sunday.

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Old 08-25-2000, 10:22 AM
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Default I tapped the front of the manifold on my 99.

The front line goes to the bypass valve. If this leaks, you'll get low/no boost which is exactly what your gauge is going to help you recognize. The line at the rear goes to the fuel pressure regulator. If you tap this and it leaks, you'll run lean which is very bad.

Good luck,
Rich
Old 08-25-2000, 11:39 AM
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Default Here's a link to Sean G.'s page with install instructions and pics. I tapped in the same spot.

<p>Regards,
Rodney

'99 A4 1.8tqms<ul><li><a href="http://www.seansa4page.com/mya4s/97/boost/boost.html">Sean G.'s Boost Guage installation</a></li></ul>
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