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What does this switch do?

I just found this on my 930 that i just bought. Its located behind the heating switch. Between the seatbelt connectors..
Sorry about the quality.

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1983 930. Stock at the moment.
Old 12-18-2007, 12:24 AM
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dial-a-death?
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Bryan O.
77 930
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Old 12-18-2007, 01:08 AM
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Quote:
Originally Posted by WPOZZZ View Post
dial-a-death?
ha ha might not tuch it then
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1983 930. Stock at the moment.
Old 12-18-2007, 01:15 AM
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Mine is under my rear fender. Keeps the temptation at bay.
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Old 12-18-2007, 01:59 AM
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what does this switch do?

Mine is mounted on the center console, and it can click 4 times either to the left or to the right, mine was set 4 click to the right when I bought the car, it has been 2 years now since I own the car but I still don't know what that little knob is for and I am scare to touch it.
Old 12-18-2007, 04:42 PM
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Niklas, do you know if your car has Andial fuel enrichment? If so, that looks like the knob to adjust the frequency. You might look under the passenger seat for the control module as that is where they are typically mounted.
Old 12-18-2007, 06:23 PM
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Quote:
Originally Posted by OSI930 View Post
Niklas, do you know if your car has Andial fuel enrichment? If so, that looks like the knob to adjust the frequency. You might look under the passenger seat for the control module as that is where they are typically mounted.
Donīt think it has but i will look tonight if it has.

thanks
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Old 12-18-2007, 10:24 PM
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OSI930 it has the Andial box under the seat. So how does this thing work if you don`t mind you asking.
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Old 12-18-2007, 11:57 PM
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The knob controls the frequency valve duty cycle for fuel enrichment. All the way left is off, 1 step clockwise is 20% duty cycle which is minimum enrichment, 2nd step is 25%, 3rd step is 30%, and the 4th step clockwise is 40% duty cycle which is maximum enrichment. The system relies on a Hobbs switch to recognize boost pressure and is typically activated at 0.6 bar boost pressure. You can go to Andial.com to read more about it as they still list it on their website. I can email you the installation instructions as well.
Old 12-19-2007, 05:55 AM
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Basically it lowers the fuel pressure from the WUR to the fuel head. This then enriches the air to fuel mix to the engine.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

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Old 12-19-2007, 01:39 PM
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Basically it sucks... Andial's system only adds fuel in the midranges. Really does nothing positive up top where you need it. I'd get a good bearing on your A/F ratio to confirm that you are running within the safety zone.
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Old 12-19-2007, 02:18 PM
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Thanks for all your help. As i am considering other upgrades later on i might just not touch the switch for now. Car runs great and that is the main thing at the moment.

Cheers
Niklas
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Old 12-19-2007, 09:12 PM
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How about some pictures of the engine bay, Niklas?
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Old 12-20-2007, 02:56 PM
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Will post some tonight.
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Old 12-20-2007, 04:24 PM
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