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Vent Boost Gauge VBG1 ( Digital Led Bars & numerics )

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Old Jun 1, 2012, 03:36 PM
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Originally Posted by HudsonFalcon
So I have the defi boost gauge and aem wideband currently installed on my X. If I bought the VBG1 could I eliminate both gauges and display boost and afr at the same time with this system?
Yes you could.
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Old Jun 1, 2012, 04:46 PM
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Originally Posted by 08GsrX
Yes you could.
That's good to know thanks.
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Old Jun 1, 2012, 06:07 PM
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Originally Posted by 08GsrX
I logged my AFR at the same time via evoscan and it read 14.6-14.7 at idle which is dead on. The gauge was reading roughly 5 higher (19.7).

Didn't know I could change the input setting on the VBG1. Would be nice if it was a sole fix like that.
Ok good your afr is great. What wideband are you using? Look in manual there is a Section on aux input "section 9". It will tell you to scroll through to the wideband you are using.
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Old Jun 1, 2012, 06:09 PM
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Originally Posted by HudsonFalcon
That's good to know thanks.
I am not sure the AEM is supported as far as widebands go. I would contact Andy and verify that first. But yes for sure it would replace your defi boost.
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Old Jun 1, 2012, 06:21 PM
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I'm using the LC1
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Old Jun 1, 2012, 06:27 PM
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Their website says it's compatible with LC-1 and AEM AFR analog output but I will definitely double check before purchasing.

Is it difficult to hook a wideband up to this unit? I have all the vac tubes and afr lines run to the dash already so is it pretty much just PnP?
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Old Jun 1, 2012, 06:37 PM
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LC1 was the default so pretty sure it was already on that.
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Old Jun 2, 2012, 05:54 AM
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Originally Posted by lossol
To clarify, VBG1 supports the aem uego gauge part #30-4100 Analog output. The configuration setting for aux input should be set to LC-1 as this gauge has the same lookup table for voltage vs AFR. (the serial connection is not yet supported for AEM)
Hmm what AEM model number do you have? Looks like AEM has changed their output equation from what the 30-4100 series was running.

Part Number 30-2310 and 30-5130
AEM UEGO CONTROLLER:
AFR = 2.375(V) + 7.3125

30-4100
Gauge-Type UEGO Controller: (note jumper config)
y = 2x + 10
Vent Boost Gauge VBG1 ( Digital Led Bars & numerics )-aem-30-4100.jpg
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Old Jun 2, 2012, 05:57 AM
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Originally Posted by HudsonFalcon
Their website says it's compatible with LC-1 and AEM AFR analog output but I will definitely double check before purchasing.

Is it difficult to hook a wideband up to this unit? I have all the vac tubes and afr lines run to the dash already so is it pretty much just PnP?
Yah all PnP for the most part if your wideband is compatible. All I had to do was run the yellow wire from the VBG1 to the analog 2 wire of my LC1.
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Old Jun 2, 2012, 06:14 AM
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I'm using the LC1
Whoa sorry I did not catch that - There are tons of people running LC-1 into a VBG1. Be sure you are are setting the output for the correct analog channel. The manual http://www.gtboostgauge.com/VBG1%20-...or%20V1.06.pdf describes using analog output 2 - which is the BROWN wire.

Also try to test the analog output by forcing it to a known state. By putting 2.5 into both the Min voltage setpoint and the Max you can force the LC1 to fix a steady output voltage.

Vent Boost Gauge VBG1 ( Digital Led Bars & numerics )-lc-1-setup-test.jpg

Do this and the VBG1 should read 15 AFR. at 2.5 volts. If you have a volt meter check this voltage at the VBG1 - LC1 analog connection point.
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Old Jun 2, 2012, 06:21 AM
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Good info. I have the 30-4100 AEM UEGO so hopefully it works without issue.
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Old Jun 2, 2012, 09:26 AM
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Originally Posted by lossol
Whoa sorry I did not catch that - There are tons of people running LC-1 into a VBG1. Be sure you are are setting the output for the correct analog channel. The manual http://www.gtboostgauge.com/VBG1%20-...or%20V1.06.pdf describes using analog output 2 - which is the BROWN wire.

Also try to test the analog output by forcing it to a known state. By putting 2.5 into both the Min voltage setpoint and the Max you can force the LC1 to fix a steady output voltage.

Attachment 189320

Do this and the VBG1 should read 15 AFR. at 2.5 volts. If you have a volt meter check this voltage at the VBG1 - LC1 analog connection point.

Yah I'm using the brown wire, I don't have a volt meter but I'll try the 2.5v thing in log works And see what happens.
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Old Jun 2, 2012, 10:37 AM
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So I did the 2.5v and it's saying 14.8AFR and not moving
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Old Jun 2, 2012, 11:05 AM
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What is your options menu 14 set to "Data Display Filtering" Low med or high.?
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Old Jun 2, 2012, 11:31 AM
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AFR seems to be working now.. Just need to start going through all these options. Gauge keeps going to sleep mode after like 2 mins lol.
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