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  mini cooper diagram

  Wiring Diagram is Indispensible!

Having a wiring diagram while working on your mini cooper electrical system makes your life so much easier as compared to tracing the wires manually as what I did when I installed the wideband O2 sensor system that I have right now.   Here I will try to update the site with some helpful tips and tricks on maintaining your Mini Cooper R53.

Mini cooper diagram

I will have soon a DIY on how to fix your door lock actuator, fix leaks etc.

heres the link for the Wiring Diagram a.k.a. Schematics, electrical diagram. Mini Cooper Diagram

• I have more projects in mind such as the LPG conversion or add-on for the mini as an alternative fuel source, but not altering the stock setup so as to preserve the California SMOG compliance.
• I already tried to let my car Idle on Propane using disposable bottle (I drilled and tapped the intake manifold for the Hook up) . Am planning to build my own flow meter using optical sensor. More on this later…
•  I’m currently in the process of design and testing of a controller to vary the opening of a solenoid valve using PWM, This will serve as the valve to control the flow of the fuel.  I’m doing this to see if I can save on fuel costs.
• I currently have a wideband O2 sensor installed and can also vary the O2 reading that goes to the DME. I have my car set to run a little lean right now about 15.6 afr. This brought up my conservative driving style MPG to 31.4 this is with a 15% supercharger pulley installed too! (Without the wideband computer installed my mpg only reaches upto 27)

•  I have used the wiring diagram above for all my experiments

• I am also curious about the gasoline vaporization theory that you will find online that claims to give you better gas mileage because of making the gasoline burn much more “efficiently” as so they say. (You get more energy or actually get the most out of the fuel instead of wasting the unburnt liquid gasoline.)  I am thinking that having propane or any other fuel that is already in vapor/gas form would give or can give you more mileage because of its readiness to be burned as compared to gasoline, even though it has less BTU’s than gasoline.
• Let’s say we have a gallon of gasoline with 120k BTU’s as compared to Propane with around 100k BTU’s. But when you use it as fuel in a ICE(internal combustion engine) energy content of Prop is 80% of Gasoline but as the vaporization theory says that vapor fuel will give you a more efficient burn or in other words get more work from your fuel, as my interpretation.
• Let’s say with gasoline you get 25% of the total BTU converted to work, so that is 30k BTU worth.
• And comparing to the GAS/Vapor ready to burn Propane fuel, If you get 40% of the total BTU converted to work, so that would be approx. 40k BTU, So hopefully we get more miles….
• I have read online that the ICE likes to run lean when it’s on Propane or other gas/vapor fuels, so I’ll try to keep it at that, I’ll have my microcontroller based controller keep the afr at around 16-17 and see what I get, or If I can keep it running.