boost at idle

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Mar 28, 2004 | 12:02 AM

koukifc3s

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From: Orange County, CA

boost at idle

hi,
what do you guys boost at idle?
My boost gauge used to show -0.6 bar at idle before.

Now it says -0.4 bar. Would that be a vaccum leak cuz my idle really sucks rite now.

Mar 28, 2004 | 12:26 AM

NZConvertible

I'm a boost creep...

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From: Auckland, New Zealand

Boost is above zero. Below that is vacuum.

That definitely sounds like a vac leak.

Mar 28, 2004 | 01:10 AM

razorback

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From: Branson, Missouri

i think i have full boost at idle..

..guess thats waht hahppens when you have a half bridge..

Mar 28, 2004 | 03:07 AM

CRXtoRX7

mmmtrbo.

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From: SF BAY AREA

RETed gave these as a general idea of what you should look for:

20" to 18" for stock ports
18" to 16" for mild street port
16" to 14" for aggressive street port
14" to 10" for bridge port

Mar 28, 2004 | 03:29 AM

razorback

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From: Branson, Missouri

ok maybe is the lack of sleep but what the hell do those numbers mean..

Mar 28, 2004 | 03:32 AM

gildardo

FC Revolution

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From: watsonville, california

Mar 28, 2004 | 03:58 AM

NZConvertible

I'm a boost creep...

Joined: Jan 2002

Posts: 15,608

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From: Auckland, New Zealand

Quote:

Originally posted by razorback
i think i have full boost at idle....guess thats waht hahppens when you have a half bridge..

Er, no it isn't...

Quote:

Originally posted by razorback
what the hell do those numbers mean..

Vacuum measured in inches of mercury (inHg). Have a look at your gauge.

Last edited by NZConvertible; Mar 28, 2004 at 04:06 AM.

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Mar 28, 2004 | 04:17 AM

razorback

You've Been Punk'd

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From: Branson, Missouri

the half bridge comment was being sarcastic..

and oh.

Mar 28, 2004 | 10:18 AM

koukifc3s

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From: Orange County, CA

to bad my stock gauge doesnt work

Mar 28, 2004 | 01:27 PM

#10

HAILERS

HAILERS

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From: FORT WORTH, TEXAS,USA

Quote:

Originally posted by koukifc3s
to bad my stock gauge doesnt work

Taking those words at face value......then you need to determine if the boost/sensor is giving an output to the ECU. The signal is split off from the boost sensor to the gauge and the ECU. Lack of one means the other is probably disfunctional also.

Mar 28, 2004 | 03:10 PM

#11

koukifc3s

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From: Orange County, CA

well the boost gauge only work sometimes. yesterday at full throttle it sowed like 20 while my HKS gauge showed .3 bar
is that bad if the stock boost gauge doesnt work?

Mar 28, 2004 | 04:16 PM

#12

CRXtoRX7

mmmtrbo.

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From: SF BAY AREA

the stock guage is not very useful, but like hailers said you should get it working. The guage will max out if you are above like 8 psi, and who knows how to read mmhg anyways. Id say get it working, and just use your aftermarket to get readings from. Plus any non-functional guage just irks me.