Forced Induction Custom FI Setup Questions

boost gauge hooked up to compressor....only 3psi???

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Old 07-14-2007, 10:07 PM
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Default boost gauge hooked up to compressor....only 3psi???

I've been having a boost leak/.....is what I thought,
I have only been boosting 2psi for the past 4 days,
today I hooked my boost gauge up to the vaccum nipple on the compressor

the highest I got to was 3psi in 4th gear @ WOT,
2nd,3rd gear only went to 2...2.5psi

anyone know whats up?

I have a td04h 13c / external wastegate /
I tried blocking the WG's dumptube & the same problem...
I have no mani leak or I would here it,
I have disconnected the WG from the turbo

any ideas??
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Old 07-14-2007, 10:40 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

huh
I've been workin my ------ *** off everyday lookin for this leak & weldin like a motha ******

whats that suppose to mean?
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Old 07-14-2007, 10:46 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

I have tried everything,,,

the boost gauge to the turbo should show all of the boost,
boost leaks afterwards would not matter!!!

& actually its pretty embarrassing to only have 2psi,
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Old 07-14-2007, 10:57 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

do what he said check for leaks with soap and water check couplers for pin holes ect.. is it internal wastegate or external?
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Old 07-14-2007, 11:03 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

Originally Posted by RandysSOHC

I have a td04h 13c / external wastegate /
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Old 07-14-2007, 11:03 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

Originally Posted by RandysSOHC
the boost gauge to the turbo should show all of the boost,
boost leaks afterwards would not matter!!!
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Old 07-14-2007, 11:03 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

Originally Posted by RandysSOHC
do you have a 3psi spring in it?? that could be the problem
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Old 07-14-2007, 11:05 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

whats your exhaust situation....
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Old 07-14-2007, 11:14 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

thx for the replys guyz.
srry I didnt post up my exhaust & spring...

I have a 3.63 psi spring in it, ( But I have the WG disconnected &/or a boost controller turned all the way up)

I also have a 2 1/4 downpipe & 2" exhaust

I get a tad bit over 3psi when my boost gauge was reading from the turbo,
WG was disconnected

but that sounds right...
the springs at 3.63psi & I was just getting a little over 3psi,,,but the WG was not connected to anything,
when I shifted the gauge jumped up to 5psi & went back down...
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Old 07-14-2007, 11:52 PM
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Default Re: boost gauge hooked up to compressor....only 3psi???

You said you shifted the gauage and it changed to 5 psi. is the line kinked or is your guage broken. hook it up to a tire inflator.
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