Weird boost readings on stock car....

1bade92 · 11-11-2007, 09:29 PM

Hey guys,

I have an STRI boost gauge like a few other members on here. I hooked it up following these instructions http://www.e90post.com/forums/showth...+gauge+install

The issue is that for some reason the car reads between 9.5 and 10.5 PSI and it's a COMPLETELY stock car. Is my boost gauge inacurate or is my source for boost no good?

Thanks in advance

scalbert · 11-12-2007, 08:13 AM

I assume you are getting those readings under full load? If so, does the gauge come back to 0 when the engine is not running?

It could be a slight calibration issue wih the gauge.

ChaneRZ · 11-12-2007, 06:41 PM

electric or mechanical gauge?

1bade92 · 11-13-2007, 01:17 PM

It's an electric gauge. When the engine is not running the gauge goes all the way to the bottom (which is something like 20 or 30 VAC) so it does not technically sit at 0. However, it does stop where the rest/stop point is.

BoostedBMW · 11-13-2007, 01:40 PM

^Hmmm... I have only run mechanical boost gauges in my turbo cars, but they have always stopped at zero when I shut the car off.

beepbeep · 11-13-2007, 01:54 PM

Quote:

Originally Posted by 1bade92

It's an electric gauge. When the engine is not running the gauge goes all the way to the bottom (which is something like 20 or 30 VAC) so it does not technically sit at 0. However, it does stop where the rest/stop point is.

When the engine is stopped and the power is still on, it should (?) read zero boost.

ChaneRZ · 11-13-2007, 02:26 PM

it should go to 0. i had an electrical gauge on my s/c prelude but it was reading wrong. i decided to put a mechanical gauge and finally it is reading right. get a mechanical gauge and see the result.

jerrym · 11-13-2007, 03:03 PM

my friend's mechanical gauge never failed on him.

11-11-2007, 09:29 PM	#1
1bade92 Second Lieutenant 21 Rep 203 Posts Drives: Ultimate Driving Machine Join Date: May 2007 Location: . iTrader: (0)	Weird boost readings on stock car.... Hey guys, I have an STRI boost gauge like a few other members on here. I hooked it up following these instructions http://www.e90post.com/forums/showth...+gauge+install The issue is that for some reason the car reads between 9.5 and 10.5 PSI and it's a COMPLETELY stock car. Is my boost gauge inacurate or is my source for boost no good? Thanks in advance
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11-12-2007, 08:13 AM	#2
scalbert Major General 153 Rep 5,780 Posts Drives: '13 S4, '15 Q7 Join Date: Feb 2007 Location: Woodstock, GA iTrader: (8)	I assume you are getting those readings under full load? If so, does the gauge come back to 0 when the engine is not running? It could be a slight calibration issue wih the gauge.
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11-12-2007, 06:41 PM	#3
ChaneRZ If You Aint First, You're last !!! 81 Rep 2,509 Posts Drives: 08 BMW 335i, 01 Honda Prelude Join Date: Sep 2007 Location: California iTrader: (0)	electric or mechanical gauge? __________________ 08 BMW BSM 335i 6MT (Sports, Premium, NAV, PDC, AS, IPOD, HD Radio, Rear Sunshade, OEM Alarm) Angel iBright V3, Luminics Fog Bulb, Turbo Tuner, K&N Drop in Filter, Dinan Exhaust, Dinan Pedals, Vorsteiner CF Front Lip, and CF Rear Diffuser. Ordered:08/25/07 Started: 09/09/07 Finished: 09/14/07 On Ship: 09/15/07 Arrived: 10/08/07 Delivered: 10/10/07
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11-13-2007, 01:17 PM	#4
1bade92 Second Lieutenant 21 Rep 203 Posts Drives: Ultimate Driving Machine Join Date: May 2007 Location: . iTrader: (0)	It's an electric gauge. When the engine is not running the gauge goes all the way to the bottom (which is something like 20 or 30 VAC) so it does not technically sit at 0. However, it does stop where the rest/stop point is.
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11-13-2007, 01:40 PM	#5
BoostedBMW Moderator 133 Rep 6,775 Posts Drives: TiAg E92 335 Join Date: Oct 2006 Location: Raleigh, NC iTrader: (14) Garage List 2003 S2000 [0.00]	^Hmmm... I have only run mechanical boost gauges in my turbo cars, but they have always stopped at zero when I shut the car off. __________________ -Michael. Berlina Black S2000 CR is now in the garage l 19" Rial Daytona Race l KW V2 l Eisenhaus Race Exhaust l
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11-13-2007, 02:26 PM	#7
ChaneRZ If You Aint First, You're last !!! 81 Rep 2,509 Posts Drives: 08 BMW 335i, 01 Honda Prelude Join Date: Sep 2007 Location: California iTrader: (0)	it should go to 0. i had an electrical gauge on my s/c prelude but it was reading wrong. i decided to put a mechanical gauge and finally it is reading right. get a mechanical gauge and see the result. __________________ 08 BMW BSM 335i 6MT (Sports, Premium, NAV, PDC, AS, IPOD, HD Radio, Rear Sunshade, OEM Alarm) Angel iBright V3, Luminics Fog Bulb, Turbo Tuner, K&N Drop in Filter, Dinan Exhaust, Dinan Pedals, Vorsteiner CF Front Lip, and CF Rear Diffuser. Ordered:08/25/07 Started: 09/09/07 Finished: 09/14/07 On Ship: 09/15/07 Arrived: 10/08/07 Delivered: 10/10/07
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11-13-2007, 03:03 PM	#8
jerrym Second Lieutenant 7 Rep 278 Posts Drives: GT35R Pinto Join Date: Oct 2006 Location: Los Angeles iTrader: (0)	my friend's mechanical gauge never failed on him. __________________ 14 Cayenne GTS 14 Carrera 4S 15 M3 ( ON ORDER )
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