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S4 / RS4 (B5 Platform) Discussion Discussion forum for the B5 Audi S4 & RS4 produced from 1998-2002

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Old 11-14-2002, 04:57 PM   #1
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Default Blitz Boost Guage / Turbo Timer install successfull!

Well believe it or not my planned installed went according to plan to the T!

Red Wire (12v constant): 30 Post under dash
Green Wire (ignition): Blue black wire on VAG connector
Ground: Grounded
E-brake wire: Just grounded it for now. May hook to e-brake later

Alarm fix: I tapped the wire for fuse 6 (central locking) and removed the 5 amp fuse from the box. I put an inline 5 amp fuse between there and the 75x post next to the 30.

That's all folks. Works perfect, TT works, alarm works. No soldering or clipping of existing wires! Just used wiretaps. Only had to remove the knee kick panel to install.

As far as the boost guage is concerned. I tapped the FPR line. Boost guage seemed to work fine. However, the highest peak boost i saw was .67 bar. Does that seem right. For the most part it would hover just under .6 bar when i was under full acceleration. This is obviously with the stock ECU. does that seem right?

I will be trying to reverse the back lighting later this week so that its usually red backlight. and green for overboost and TT.

Install Pics
Temporary install location


(edit: I ended up tapping the FPR line instead of the BPV line. I updated these directions to reflect that.)
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Old 11-14-2002, 05:22 PM   #2
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Default That line will not show accurate readings for boost....

There is a valve in front of it that will affect your readings. The OEM test point for boost is the FPR hose and everyone uses that location for guages. You'll be fine if you use it.
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Old 11-14-2002, 05:56 PM   #3
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Default although you may be able to tell if your BPV is broke you are getting the wrong boost reading

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Old 11-14-2002, 06:48 PM   #4
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Default Dude! This line does not get ANY boost. All you will get is occasional vacuum

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Old 11-14-2002, 07:40 PM   #5
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Default ok ok. So I switched to the FPR line. Seems to be more accurate.

It responds to throttle input better. The BPV line doesnt seem to be quite as responsive to manifold preaure/boost.

Thanks for the info guys!
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Old 11-14-2002, 07:47 PM   #6
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Default Kitch, can you get a close up pic? I want to see this thing and mine doesn't arrive until tomorrow.

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Old 11-14-2002, 08:20 PM   #7
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Default Check my install pics from the first post again. Updated with new pics.

If you need info tomorrow IM me on AIM, jakekitchener

The install really is pretty simple. I was just a little hesitant about the wires to use. But everything worked out perfect.

Oh, is that what you wanted better pics of? the vacum tap? Let me know if you need something else.
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Old 11-14-2002, 08:58 PM   #8
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Default I was hoping for some closeups of the installed gauge...thx.

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Old 11-14-2002, 09:17 PM   #9
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Default Updated pics in link from original post.

The red backlight is EXACTLY the same as the rest of the dash. My plan is to reverse the backlights then polarise it so its red on black instead of black on red. then mount in cupholder slot. damn near oem.

More Pics
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Old 11-15-2002, 01:20 AM   #10
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Default WOW... good stuff dood.

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Old 11-15-2002, 01:20 AM
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09, 2000, a4, alarm, audi, b5, blitz, boost, cobalt, fix, guage, install, installing, s4, timer, turbo


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