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Vent Boost Gauge (Digital Led Bars & numerics)


lossol

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So when are you going to start your beta test run for the 2010-11?

I gotta get my hands on a 10-11 vent, so probably with the next few months. I'm not sure if it will fit in the center console vent, so it will probably have to be the drivers side vent again.

 

Out of curiosity...Is anyone actually using the parking lights sense line? Or is everyone pretty much using ambient light detector?

VBG1 gauges available at www.gtboostgauge.com
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I don't even have mine hooked up. I was too lazy, and ambient actually works pretty well.

 

I received the updated display with the oil pressure averaging revision, but haven't had a chance to install it yet. I'll let you know when I do.

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Sorry for the delayed post. I installed the updated display earlier this past week. My impression is that at medium update rate, the jumpiness is roughly equivalent to what it was at slow update rate before, and at slow update rate, there is no longer any jumpiness whatsoever.

 

I really cannot say enough good things about the gauge as a whole, both for boost and oil pressure. It's the best option out there for 05-09 LGTs/OBXTs IMO. Might be my favorite mod... ;)

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Sorry for the delayed post. I installed the updated display earlier this past week. My impression is that at medium update rate, the jumpiness is roughly equivalent to what it was at slow update rate before, and at slow update rate, there is no longer any jumpiness whatsoever.

 

Perfect! Thanks for getting back to us on that update rate. Glad you are liking the gauge.

 

Is there any way of increasing the refresh rate of the temperature sensor aux input? It only updates every few seconds.

 

No. It is fixed for the temp sensor. The temp sensor is actually updating every few seconds or when the variation exceeds a specified minimum increment of change. The idea is to add some hysteresis and stability to the readout. You will also notice that if you encounter large temp change fast, it will keep up, however the thermal response of the temp sensor is somewhat slow due to the thermal resistance of the temp sensor encapsulation.

 

Hope that helps!

VBG1 gauges available at www.gtboostgauge.com
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My temperature readout went funny yesterday. It's reading 125 degrees C but fluctuates like it's flashing between working (35 degrees) and faulty.

 

On another note - how heat resistant is the wiring and sensor? I'd like to relocate it to wedge in between intercooler fins to get some more realistic and usable temp feedback.

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tangcla, A couple of thoughts on possibilities:

 

  • It could be related to a loose connection, including at the extender, most likely.
  • The afr line could be touching another line with voltage on it somehow, this would cause the sensor to rail.
  • It could be a software bug for Celsius conversion? I dont think so.

 

Is it doing this jump while driving or idle?

 

The ambient aux temp sensor is good to 125 C the material it's encapsulated in is rated to 105 C. (221F)

VBG1 gauges available at www.gtboostgauge.com
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tangcla, A couple of thoughts on possibilities:

 

  • It could be related to a loose connection, including at the extender, most likely.
  • The afr line could be touching another line with voltage on it somehow, this would cause the sensor to rail.
  • It could be a software bug for Celsius conversion? I dont think so.

 

Is it doing this jump while driving or idle?

 

The ambient aux temp sensor is good to 125 C the material it's encapsulated in is rated to 105 C. (221F)

 

It's usually when it's idle. Works fine most of the time, I've sealed it off.

 

Would the wiring be able to take more heat if I shrinkwrapped the wire?

Edited by tangcla
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IF you look at this post:

 

http://legacygt.com/forums/showpost.php?p=2826293&postcount=142

 

You will see the board stack up. To change that LED you would need to remove the overlay and de-solder the interface board from the main board. I dont think you will be able to swap that led without separating the board stack.

 

The red led datasheet is at:

http://catalog.osram-os.com/media/_en/Graphics/00042116_0.pdf

 

The white led datasheet is at:

http://www.mouser.com/catalog/specsheets/Lite-On-LTW-170TK.pdf

VBG1 gauges available at www.gtboostgauge.com
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Hmm, ok. Without asking you to divulge too much information, is it possible to de-solder the interface board easily without damage?

(Of course, I don't even want to think about the LCD and the rest of it just yet... :p)

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  • 4 weeks later...

Hey Installed this tonight.....

 

It all went smoothly except for not knowing that fuse tap requires an additional fuse.

4 hours and many scary CEL later, it all works now.

 

One thing I have noticed, I ran the boost gauge and ran romraider and measured relative manifold pressure and noticed a about 2~3 psi difference for boost. Goost gauge peaked at 17.4 psi, while romraider only showed 15.x psi.

 

Is there a calibration I overlooked or am I missing something ?

 

thanks

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Assuming you have hooked up power correctly, calibration is completed each and every time at power up of the IG2 power and the gauge samples ATM before the engine cranks. The VBG1 is also good at catching transients of boost, I'm not sure what the sampling rate of romraider is but could be a part of the discrepancies. Although 17.4 sound high for stock.

 

bump for info as to prosport is the only one that will work

 

At this point in time, yeah, prosport is the only option for oil pressure.

VBG1 gauges available at www.gtboostgauge.com
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  • 1 month later...
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lossol, I'm having some problems with burn-in. Idea -- you said the auto-reverse burn-in reducer feature was too distracting, but could you put a "reverse colors" option in the menus? That way I could toggle that option every couple of months in order to reduce burn-in.
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Im having a few discrepancies as well the VBG shows ~.6 to .8 lower then my accessport. I never read as high as max boost either. :-/ I ziptied all the lines and still off.

 

Every gauge shipped is pre-tested with a digital manometer to an accuracy of +/- 0.25 PSI (up to 30 PSI) I'm not sure what the accuracys are of the access port or where the senor is. That may matter, the other thing I don't know is how the access port determines ATM pressure. The VBG1 samples ATM pressure at startup everytime.

 

lossol, I'm having some problems with burn-in. Idea -- you said the auto-reverse burn-in reducer feature was too distracting, but could you put a "reverse colors" option in the menus? That way I could toggle that option every couple of months in order to reduce burn-in.

 

Burn-in on oleds is a pain. In version 1.04 I introduced a screen saver timeout option, are you running that version? do you have that enabled? I have found that to work very well at reducing burn-in. Actually a "reverse colors" options is what I experimented with. Still due to the formatting of the text being close to the black boarders when it was reversed, it looked terrible.

VBG1 gauges available at www.gtboostgauge.com
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