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Old 04-08-2002, 09:15 PM   #1
6Pack
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Unhappy defi hud boost owners help!

I'm trying to follow the instructions and I have 2 problems. Did some searches and couldn't come up with anything. Decided to post in this forum so that right people would see it.

(1) The instructions say to 'set number of cylinders in your engine using the cylinder switch on the control unit'. Where the heck is this on the unit?

(2) When I turn on my lights, the display goes VERY dim. Impossible to see during dusk, and very low during night time. Also altering the illumination intensity from the control on the steering column does NOT change the HUD intensity at all. I'm pretty sure I tapped the violet wire from the radio. Is it possible when I crimped the connection that it didn't make a solid connection and in fact this wire is not connected? Does everyone else's HUD intensity change with you alter it using the controls on the steering column? Is the violet wire the correct one?

Thanks guys!
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Old 04-08-2002, 10:44 PM   #2
FreeBMW
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my defi HUD does not use the cars signal to dim...it has a button on the control box to switch between 4 preset levels. I think the cyl settings are set using the block of DIP switches by where the wires plug in.

BTW i have the speedo/tach NOT the boost gauge.


hope this info helps in some way
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Old 04-09-2002, 12:22 AM   #3
wylie
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6Pack - I just installed one yesterday.

1) The cylinder setting is for the "VSD II" which is the speedo/tach HUD unit.

2) I also noticed how dim it got when I turned on my lights too, but I haven't put the film on the window yet. That is suppose to help. I suppose you could use a darker tint film if the ones supplied are too light. I'm still trying to figure out exactly where I want it displayed before I put the film on.

Anyone know how to calibrate this gauge? Or any gauge for that matter? I'm reading up to 1.16 bar, ca. 17 psi or so, with a Stage 0. I guess I need to turn the boost down?! Or is the gauge reading high?
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Old 04-09-2002, 06:14 AM   #4
SubEd
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The cylinder setting is on the "control box", or whatever it's called.
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Old 04-09-2002, 09:14 AM   #5
6Pack
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Okay, so I don't need to worry about the cylinders (wonder why I need to with just boost).

wylie,
When you adjust the brightness of interior lights on the steering column does your HUD dim with the rest of the interior lights? Mine only dims once the interior lights are on, the brightness never changes no matter what I do.
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Old 04-09-2002, 10:23 AM   #6
Ginseng
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I have the Boost/TT HUD in my WRX. I forgot which wires I tapped, but the display does dim with the dash dimmer. However, there is a problem with the middle or intermediate brightness settings. The display is ok for the second to brightest and brightest and dimmest settings but the display flashes (while displaying the info) on any other setting. I did not have to set cylinders. The gauge seems to be reading properly. I tapped the line above the manifold and not the line by the blowoff valve. The reading does pulse a bit but it's very responsive. I've seen readings up to 1.05 kg/cm^cm which is about right for max boost.

I opened up the control unit and there are dip switches but I did not mess with them.

The right film makes a world of difference. The gold film they supply with the kit is metallic reflective and is effective in day or night. I used a piece of Llumar 35% semimetallic window tint film and that works fine as well. Make sure your seat is where you want it to be before you install the reflective film.

W
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Old 04-09-2002, 10:31 AM   #7
Dussander
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Just an FYI...
My Defi Link System only works with the illumination set to the two top settings (which I find annoying but I live with it) so apparently Defi requires some minimum voltage for the illumination. I'm not sure why it uses the illumination to power the gauges though.
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Old 04-09-2002, 11:02 AM   #8
BADWRX
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Well, the illumination does not power the guages. My lights worked, but nothing else...come to find out...I had a bad vcc wire.

I cannot dim my illumination. I am taped into where the clock used to be? Huh...that is not fair. I want mine to dim too!

Andy
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Old 04-09-2002, 03:47 PM   #9
Dussander
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Hum, did you use the orange wire (next to purple) for ground? I did. I'm wondering if that difference is what is causing our strange/different results.
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Old 04-09-2002, 04:30 PM   #10
6Pack
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Quote:
Originally posted by Dussander
Hum, did you use the orange wire (next to purple) for ground? I did. I'm wondering if that difference is what is causing our strange/different results.
So how bright is it when you turn on the lights? Can you vary your defi brightness by rotating the knob? Can you read it during dusk or daytime even?

Mine doesn't vary and it's impossible to read during day and dusk. Only when it's nighttime I can read the boost with my lights (illumination) on.

The Orange w/white wire from the radio is illumination (-). The defi instructions said illumination (+) so I tapped the violet one. Difficult to tell from the instructions because it's obvious that it's been very quickly translated into english.
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Old 04-09-2002, 04:37 PM   #11
6Pack
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Quote:
Originally posted by Dussander
Hum, did you use the orange wire (next to purple) for ground? I did. I'm wondering if that difference is what is causing our strange/different results.
Oops just reread. For ground, I tapped black. If you connected the defi black to the radio orange wire this is definitely something you should change. It went like this:

Defi ---> Radio
-----------------------
Red ---> Yellow w/ green (ignition +12V)
Orange ---> Violet (illumination +)
Black ---> Black (chassis ground)
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Old 04-10-2002, 02:01 AM   #12
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6pack - I can't adjust the brightness either, and it is pretty dim when the lights are on. I couldn't see the gauge at all when it was starting to rain and I had to turn on the lights.

Also, I have to manually turn it off, it doesn't turn off when the ignition is off? What wires do I have to tap so that it turns on/off with the ignition?
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Old 04-10-2002, 09:05 AM   #13
6Pack
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Quote:
Originally posted by wylie
6pack - I can't adjust the brightness either, and it is pretty dim when the lights are on. I couldn't see the gauge at all when it was starting to rain and I had to turn on the lights.

Also, I have to manually turn it off, it doesn't turn off when the ignition is off? What wires do I have to tap so that it turns on/off with the ignition?
wylie,
That's good to know then sounds like I did have everything hooked up correctly.

As far as the boost not turning off, you hooked up the red wire from the defi unit incorrectly to a constant +12V from the car. You want to hook the red defi wire to a switched (+12V only when the car is on). See my diagram above to where I tapped the radio for it. There's a bunch of other diagrams online too, just search for them. Also a voltmeter will help the ignition +12V will read 0V when the car is off and +12V when the car is on. Hope this helps!
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