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Old 03-07-2012, 04:54 PM   #1
granny
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Default Boost Gauge

Hey guys. I still need to figure out something for the boost gauge. Does anybody make one that plugs into the intake? Not sure if Paul did this to the rally car. If anyone knows let me know.
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Old 03-07-2012, 05:58 PM   #2
QwikEVO
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Quote:
Originally Posted by granny
Hey guys. I still need to figure out something for the boost gauge. Does anybody make one that plugs into the intake? Not sure if Paul did this to the rally car. If anyone knows let me know.
A boost gauge pre-turbo?
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Old 03-07-2012, 06:07 PM   #3
granny
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No I was thinking about tapping into the throttle body. Would this work?
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Old 03-07-2012, 06:09 PM   #4
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Pick any vacuum line post throttle body and tee into that line for your vac/boost source.
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Old 03-07-2012, 06:11 PM   #5
granny
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Would any gauge work? What do I need to make it work?
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Old 03-07-2012, 06:13 PM   #6
retrac
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As long as it's quality and isn't going to fail on day one. I recommend making sure you pick one that measures both vacuum and boost, it's valuable for tuning and troubleshooting.
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Old 03-07-2012, 07:28 PM   #7
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What's your max psi expected to be?
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Old 03-07-2012, 07:32 PM   #8
granny
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What's your max psi expected to be?
Not sure. I'm just trying to get it running first.
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Old 03-07-2012, 07:44 PM   #9
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I ask because I've been wanting to get a Defi Racer series boost gauge to replace my SPT boost gauge. SPT goes to 20psi and my car is tuned to high 19, almost 20. Let me know if you might be interested.
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Old 03-07-2012, 07:52 PM   #10
granny
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Pm sent.
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Old 03-07-2012, 07:53 PM   #11
kyletakahero
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Been thinking the same thing.. Plus it would be nice to have just two gauges that I actually want/need.
Boost and Oil Pressure.
And that way they would fit perfectly into a SMY bezel.

Whenever I upgrade gauges, I'm definitely going the Defi Racer route.
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Old 03-07-2012, 08:17 PM   #12
chanomatik
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Defi Racer series are standalone units, they don't use the Link Control unit, so that's something to consider if you are planning on multiple gauges. For now I just care about boost, but eventually I'd like to add others.
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Old 03-07-2012, 08:28 PM   #13
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Mhm, which I like about the Racer series.
I figure if I really want to log parameters I'll just pull a retraC and buy a mini-book and a Tractix cable. Otherwise I'ld like to be able to just watch those two points when I drive hard.


But the thing I like about the SPT is the fact it is Anaglog and not using a digital sender to give your the reading. Which, in theory, gives you a faster and more precise reading.

Last edited by kyletakahero; 03-07-2012 at 08:39 PM.
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Old 03-07-2012, 09:08 PM   #14
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Quote:
Originally Posted by kyletakahero View Post
Mhm, which I like about the Racer series.
I figure if I really want to log parameters I'll just pull a retraC and buy a mini-book and a Tractix cable. Otherwise I'ld like to be able to just watch those two points when I drive hard.


But the thing I like about the SPT is the fact it is Anaglog and not using a digital sender to give your the reading. Which, in theory, gives you a faster and more precise reading.
I would think slower since the air in the line and gauge has to compress. A signal travels way faster than air does.
I noticed a big difference in response between the biggish vac line I have on the sti and the 1/8" plastic line I used on the wrx.
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Old 03-09-2012, 02:22 PM   #15
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If the STI had a stock gauge once upon a time and the line for that was used there is a constrictor (small brass tube) in the line right after the manifold. This causes the gauge to be smooth response wise but very slow. Also many gauge kits that come with a plastic tee also have this as well that can cause delays in gauge response.

Quote:
Originally Posted by AK_Ford View Post
I would think slower since the air in the line and gauge has to compress. A signal travels way faster than air does.
I noticed a big difference in response between the biggish vac line I have on the sti and the 1/8" plastic line I used on the wrx.
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Old 03-09-2012, 02:27 PM   #16
P3Auto
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@Granny,
Not sure if you got it up and going but I would start with wastegate only pressure(manifold pressure routed straight to wastegate actuator), you may even find this is a bit high for your setup depending on the turbo and the wastegate pre-load. Watch for boost creep towards redline. Looking forward to hearing more!
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