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10-11-2008, 08:41 AM
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#1 (permalink) |
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Fibreglass Junkie
Join Date: Jun 2007
Location: Singapore
Posts: 232
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Power Source for Boost Gauge
Does anyone know an "easy" power source for a boost gauge? One that doesn't cut out when cranking the engine. Thanks in advance.
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'07 Exige S L&C Motorsports - Parts for Lotus Elise/Exige in Asia LotusClubSG - Lotus Club of Singapore |
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10-11-2008, 09:04 AM
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#3 (permalink) |
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Fibreglass Junkie
Join Date: Jun 2007
Location: Singapore
Posts: 232
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But radio gets cut out when cranking the engine ya? I need a power source that doesn't as the Stack gauge I have recommends the use of a suitable power source so their "auto zeroing" feature will work. Otherwise, the gauge might not read accurately according to the installation instructions.
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'07 Exige S L&C Motorsports - Parts for Lotus Elise/Exige in Asia LotusClubSG - Lotus Club of Singapore |
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10-11-2008, 10:10 AM
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#5 (permalink) |
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disproving HD MTBF daily
Join Date: Feb 2005
Location: Las Vegas , NV
Posts: 8,283
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Depends what the voltage range it can drop too, you'll probably see as low as 6V at the battery on cranking too.
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Black Exige S - http://goth.am 265 Mule / Elan M100 ECU Tuning, http://www.elisetalk.com/forums/showthread.php?t=39660 Arguing with an engineer is like wrestling with a pig in mud. After a while, you realise the pig is enjoying it. |
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10-11-2008, 01:10 PM
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#6 (permalink) |
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Registered User
Join Date: Nov 2007
Location: LA SFV
Posts: 314
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I also would like to know where i can get switched power with out a start drop out. I believe OP has a innovate product to measure boost.
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07 Exige S - PhB., TP, TP, LSD, Rear Panel Delete, Custom Magnaflow Exhaust, Custom AEM Intake, 6k HIDs, Schroth 4pt ASM Harnesses |
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11-27-2008, 10:12 AM
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#7 (permalink) |
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Fibreglass Junkie
Join Date: Jun 2007
Location: Singapore
Posts: 232
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Hmm, still a mystery....
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'07 Exige S L&C Motorsports - Parts for Lotus Elise/Exige in Asia LotusClubSG - Lotus Club of Singapore |
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11-27-2008, 10:46 AM
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#8 (permalink) |
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disproving HD MTBF daily
Join Date: Feb 2005
Location: Las Vegas , NV
Posts: 8,283
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Its not really possible without adding something to buffer it.
__________________
Black Exige S - http://goth.am 265 Mule / Elan M100 ECU Tuning, http://www.elisetalk.com/forums/showthread.php?t=39660 Arguing with an engineer is like wrestling with a pig in mud. After a while, you realise the pig is enjoying it. |
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11-27-2008, 05:45 PM
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#9 (permalink) |
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Fibreglass Junkie
Join Date: Jun 2007
Location: Singapore
Posts: 232
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Oh well... mechanical gauges might be the better choice for our cars then...
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'07 Exige S L&C Motorsports - Parts for Lotus Elise/Exige in Asia LotusClubSG - Lotus Club of Singapore |
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11-27-2008, 09:47 PM
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#10 (permalink) |
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disproving HD MTBF daily
Join Date: Feb 2005
Location: Las Vegas , NV
Posts: 8,283
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i don't usually need to read the gauges when cranking the engine, but a simple capacitor will in all likelyhood fix it.
__________________
Black Exige S - http://goth.am 265 Mule / Elan M100 ECU Tuning, http://www.elisetalk.com/forums/showthread.php?t=39660 Arguing with an engineer is like wrestling with a pig in mud. After a while, you realise the pig is enjoying it. |
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11-28-2008, 07:03 AM
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#11 (permalink) |
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Ex-Brit
Join Date: Jul 2005
Location: Boca Raton FL
Posts: 1,814
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Another alternative is if you really want to get crazy is to give it its own small battery power supply
Maybe that would work, don't know for sure.
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A/C Improvement Modifications http://www.lotustalk.com/forums/f3/e...ent-mod-59938/ 1) Insulate the cockpit from Solar (3M Crystalline Tint) & Convected (insulate sills) heat. 2) Replace evaporator thermostat with an upgraded electronic version to prevent freeze up. 3) Increase airflow into cockpit by removing both driver & passenger side footwell intake panels & blocking 2 outside air intakes in nose. |
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11-28-2008, 07:30 AM
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#12 (permalink) |
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2/3 hp to the paws.
Join Date: Jan 2008
Location: NY
Posts: 106
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If you need constant power, there's a distribution block under the dash that goes directly to the battery.
If you need switched, you can tap the ignition switch, though the best way to do it is to run a relay via a separate fuse that is switched by the ignition power. |
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11-28-2008, 07:37 AM
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#13 (permalink) | |
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Ex-Brit
Join Date: Jul 2005
Location: Boca Raton FL
Posts: 1,814
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I believe he is asking for a power supply that does not dip due to voltage drop during cranking rather than a unswitched source.
Quote:
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A/C Improvement Modifications http://www.lotustalk.com/forums/f3/e...ent-mod-59938/ 1) Insulate the cockpit from Solar (3M Crystalline Tint) & Convected (insulate sills) heat. 2) Replace evaporator thermostat with an upgraded electronic version to prevent freeze up. 3) Increase airflow into cockpit by removing both driver & passenger side footwell intake panels & blocking 2 outside air intakes in nose. |
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11-29-2008, 12:32 PM
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#14 (permalink) | |
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2/3 hp to the paws.
Join Date: Jan 2008
Location: NY
Posts: 106
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Quote:
I do this on all my cars, and the Defi boost gauge in the Elise is quite happy with that arrangement. It will dip slightly when the starter runs, no way around that short of rigging up a capacitor, but no gauge should be that picky. |
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11-29-2008, 12:40 PM
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#15 (permalink) |
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disproving HD MTBF daily
Join Date: Feb 2005
Location: Las Vegas , NV
Posts: 8,283
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It drops to about 6V, if theres a 12V to 5V regulator in the gauge, it'll probably power off/reset.
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Black Exige S - http://goth.am 265 Mule / Elan M100 ECU Tuning, http://www.elisetalk.com/forums/showthread.php?t=39660 Arguing with an engineer is like wrestling with a pig in mud. After a while, you realise the pig is enjoying it. |
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