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      04-14-2020, 08:12 PM   #1
pongkin
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snow vc50 gauge boost tap

Hey, anyone running this gauge?
My issue is I have it connect on one of my bungs on the CP, issue is my target boost is 22psi on bm3 tune, the vc50 reads all the way up to like 28. I know its electrical vs mechanical. how are you guys hooking it up?
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      04-14-2020, 08:52 PM   #2
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Are you looking at the correct boost in the logs? You would need to compare pre-throttle boost to what is measured from a bung on the CP. You would not compare to MAP as that is after the throttle. There will be a difference if you have any kind of throttle closure.
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      04-14-2020, 09:03 PM   #3
pongkin
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yea i look at the dashboard in bm3 and vc50 and doesnt boost synced. at wot the gauge is way higher reading than bm3
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      04-15-2020, 07:03 PM   #4
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i have my VC50 hooked up to the MAF using P3 Boost tap.
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      04-16-2020, 08:33 AM   #5
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The only way they will align is if they see that same signal. The different sensors will read slightly different pressures. With that said, does it really matter? Just set your controller to start and end as needed based on logs. The boost value on the controller should really just be for reference, not relied upon as an actual value.

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Originally Posted by pongkin View Post
yea i look at the dashboard in bm3 and vc50 and doesnt boost synced. at wot the gauge is way higher reading than bm3
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      04-16-2020, 08:37 AM   #6
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Quote:
Originally Posted by $howtime456 View Post
i have my VC50 hooked up to the MAF using P3 Boost tap.
thats on the intake manifold?
i had hooked it up with a boost tap on the tmap on the CP, same high readings

yea I figured it is what it is, will just leave it so then
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      04-17-2020, 12:53 AM   #7
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my VC50 measures very accurately to what my pre throttle psi is according to my logs
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      05-01-2020, 02:10 PM   #8
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Quote:
Originally Posted by pongkin View Post
thats on the intake manifold?
i had hooked it up with a boost tap on the tmap on the CP, same high readings

yea I figured it is what it is, will just leave it so then
no i actually have it on the Charge Pipe as well
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      05-01-2020, 02:12 PM   #9
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Quote:
Originally Posted by $howtime456 View Post
no i actually have it on the Charge Pipe as well
Charge pipe is pre throttle boost, and MAP is manifold boost. The two will be different if you have any kind of throttle closure.
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      05-01-2020, 02:18 PM   #10
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yea so my tune is set for about 22psi but my vc50 gauge reads 28 🤷*♂️
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