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boost gauge help

ImPrOvIsE

By ImPrOvIsE,
in Western Australia

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ImPrOvIsE Collaborator

ImPrOvIsE

Posted
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just bought a cheapie boost guage and was wondering how to get the tubing through the firewall. I tried sticking it through the hole where the wires from the factory sensor dissapear but doesnt seem to work.

Im like a kid with a new toy and coulndt wait so I hooked it up with the tubing coming in through the drivers window just to check the acccuracy of the gauge and the initial results seemed very promising. It sat on 5psi on early revs then up to 9psi in the later revs.

Anyway, anyone with any ideas and/or pics on how to get the tubing throught the firewall would be greatly appreciated.

Also, is it better to keep the factory gauge hooked up as well or not?

Cheers

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ImPrOvIsE Collaborator

ImPrOvIsE

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bought it from supacheap although the gauge still has the Marlows brand name on it. Costed $40. Looks fine and initial results seeemed to be quite accurate. Cant justify spending stupid amounts just on a gauge that looks very similar. Maybe the brand name gauges are more accurate to .5psi or whatever, maybe its just marketing and image?

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ImPrOvIsE Collaborator

ImPrOvIsE

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Thanks guys. Managed to get it through the grommet that is to the right of the brake booster. Wasnt much room left in there so had to push through some coathanger wire then pull through the tubing afterwards. Next step is to find a decent location for the gauge. Currently have it gaffa taped around the steering column and surprisingly it looks alright. Can you get a yellow for this?

Is it better to have the factory boost guage still connected using a T-piece as well, or just one tube connection from the guage to the intake manifold?

NExt step is to wire the guage up. Wheres a good place for the earth and the power to be hooked up?

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Cake Mentor

Cake

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Xcuse the ignorance but can you just tap into the power, not completey take the power source?

Mine's tapped into the dimmer power source, and works fine. maybe i should get me one of these small junction connector blocks.

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zanda Grand Master

zanda

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couple of things - anything on your dash needs to be dimmable - under ADRules. Therefore the best way to do this is wire the lights into the dimmer switch that is installed for compliance. Just make sure you splice AFTER the resistor - from memory the dimming is actuall on the ground side of most of the accessories. If you know what I mean.

Also, at the risk of stating the obvious, you need to use an accessories line (comes on when the key is turned on), not a 12v+ battery power line, lest your light will be on all the time and run your car battery flat.

also be aware that you need to be able to see the factory gauges and that anything impinging this veiw is yellowable.

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fane Mentor

fane

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zanda is knowledgable... i want the light on mine to come on when i turn on the car so i will be using the accessories....i still have an illumination/accessories wire spare from my cd player that i may use...

that is the wire that turns on the light when you turn on your headlights hopefully.... dont know with these imports....

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