Discovery
I just discovered that after the gas pedal on my car is depressed all the way, it can still be pushed one "click" further, to accelerate even faster. Sweet.
Posted on April 28, 2007
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April 28th, 2007 - 20:00
Some old automatic transmission cars were designed so that the extra “click” kicked down the transmission one or two gears for faster acceleration. However, newer transmissions will change down based on the power demand. I have no idea what your extra click is for!
May 4th, 2007 - 09:55
Maybe it’s your Fast!!
May 23rd, 2007 - 05:26
Eric, great stuff. I was wondering if you had an opinion on something. I want to provide “permanent” power to my portable GPS unit from my 2006 GTI. My first thought was remove the radio and power the mini USB that way from behind the radio – then run the usb cable through the dash (not positive but i think that can be done). Then I saw your post about the USB-CAN connection under the steering wheel. In theory I could connect there, fish the cable up under the dash and pull it out whereever I want to mount the unit. Does this sound feasible? Should I worry about power levels/spikes to the GPS unit?
May 23rd, 2007 - 09:16
I don’t think the USB-CAN connection will work, because of how the connection works – in that case the laptop computer is the USB ‘master’, and the car is the USB ‘slave’, so it would be the laptop which provides power to the car. In your case the GPS unit is a USB ‘slave’ which you normally connect to a ‘master’ computer. You can’t connect it to the car, because it’s not possible to connect two USB ‘slave’ devices to each other.
Probably what you want is to use the 12V cigarette lighter plug as your power source. There are various plug connectors for charging cell phones and MP3 players in your car which should work for your GPS unit. For example search for ‘car mp3 charger’ on Amazon:
http://www.amazon.com/Universal-MP3-Car-Charger-Adapters/dp/B000A0LEBO/ref=pd_bbs_sr_1/002-4764596-5597620?ie=UTF8&s=electronics&qid=1179936617&sr=8-1
I wouldn’t worry too much about voltage spikes since it’s a DC connection to the car battery, which can’t spike (and the alternator will prevent spikes coming from the engine). If anything you will only have to worry about voltage ‘drops’ below 12V, such as when starting the car – this happens to me when I start my engine – the power level drops and most of my electronic devices briefly lose power