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A question for the Turbo guys

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Old 09-23-2007, 05:33 PM
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Question A question for the Turbo guys

What exactly does the goofy led boost guage on the digital dash tell me ??? How do I hook up a real boost guage that reads out in PSI ???
Old 09-23-2007, 05:37 PM
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is there a stock boost gauge for the 22RET? Like most stock gauges its probably more of an on-off kind of readout like the dumby temp gauge that never changes once its warmed up, so that means its telling you that you are either in boost or vacuum in the intake manifold. Hooking up an aftermarket one is VERY simple. Just run a piece of tubing from any vacuum port on the intake manifold which is AFTER the throttle body to the back of the gauge. Most likely you would T into one of the existing lines, for example to the fuel pressure regulator ( if it has a vac port, just guessing as an example, I'm only familiar with supra 7Ms )

Last edited by NCSU-4runner; 09-23-2007 at 05:39 PM.
Old 09-23-2007, 05:38 PM
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It tells you "you have boost" and thats about it. You will have to get an after market boost gauge and hook it up somewhere after the turbo
Old 09-23-2007, 07:46 PM
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The light comes on at exactly 1psi of boost and is very accurate on my truck.

I've got a electric autometer boost/vac guage hooked to a delco map sensor, when it's cold it always gives me false readings but the light is always accurate measured on a static pressure guage.

The boost guage is hooked in to a unused port on the switch that turns on the boost light that is on the INBD side of the intake manifold.

I'm out of town and away from my truck so I can't supply you with a pic. Maybe someone else would be nice enough to snap a shot of theirs.
Old 09-23-2007, 08:18 PM
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just go get a mechanical boost gauge and tap an open spot on your intake plenum, run the hardline that comes with it to you cab and mount the gauge. Easy as pie. Literally took me 25 minutes to do on our 6.5L turbo diesel that didnt have a boost gauge.

Last edited by Bumpin' Yota; 09-23-2007 at 08:26 PM.
Old 09-23-2007, 08:38 PM
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Originally Posted by Trumpfan
The light comes on at exactly 1psi of boost and is very accurate on my truck..

My understanding is that it's a "should have boost" gauge..
Not to be confused with a real boost gauge... :-)
Old 09-24-2007, 08:58 AM
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The Turbo trucks had the Turbo Light, it was just come on.

The turbo 4Runner's had a "boost gauge" such as this one:

On the this dash, you can see it has 12 LED's to show how much boost there is.
Old 09-24-2007, 12:48 PM
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so if 12 led,s are lit thats how much boost?????
Old 09-24-2007, 02:29 PM
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Originally Posted by trd90toyota
The Turbo trucks had the Turbo Light, it was just come on.

The turbo 4Runner's had a "boost gauge" such as this one:

On the this dash, you can see it has 12 LED's to show how much boost there is.

Oh I never realised there was a dash like that. Kinda neat in a 80's sorta way. Just plumb in a boost guage and away you go.
Old 09-24-2007, 04:29 PM
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I wouldn't expect stock boost to be any more than 6-8 psi.
Old 09-24-2007, 06:02 PM
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you wanna sell it??????? the cluster?????
Old 09-26-2007, 05:03 PM
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Originally Posted by just a 22re
you wanna sell it??????? the cluster?????
If I didn't have a project for it, I'd sell it. This unit was in my old 4Runner before it got flipped. Now I have a 85 4Runner that I'm putting the turbo motor in.

Here is the build-up(shameless plug):
https://www.yotatech.com/forums/f116...ild-up-111861/
Old 09-27-2007, 02:40 AM
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Can any one recomend a good Boost guage without getting too expensive and whats a good spot for mounting???
Old 09-27-2007, 03:35 AM
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summit has a mechanical unit for about 25 bux + shipping. It works perfectly.
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