Cool Down Everybody

As you know stiff regulations oblige manufacturers to set their engines with a very lean air/fuel mixture with for consequence some robbed performance and high cylinder head temperatures. All new motorcycles/engines are affected by lean air/fuel mixtures and the problem is even more extreme on fuel injected models. Many among you would like to improve their engine performance and the same time make it run cooler. It’s not easy to alter the signals from the stock Harley electronic control module (ECM) to richen air/fuel mixture and boost performance. There is a product called the Fi2000R EFI tuner conceived to intercept the signals from the oxygen sensors to the stock ECM and from the ECM to the injectors to instruct them to increase the length of time they are open thus richening the air/fuel mixture. On the Fi12000 there are 3 dials. One equivalent to the mixture screw on a carburetor to control off-idle fuel demands. One equivalent to the needle position and clip position. One equivalent to a main jet. On a Harley-Davidson bagger, the manufacturer states that you will lower the cylinder head by at least 100 degrees! More info on this digital fuel processor at Fi2000. (not legal for use on California Highways).


3 Responses to “Cool Down Everybody”

  1. 1 a 1 cycles Sep 25th, 2008 at 10:04 am

    these controllers work well on mild machines, slip ons, air cleaner, and a filter..but they will not adjust enough for large cams, or cylinder head work, or big my experience they leave huge holes in the air fuel ratio. they are a low cost alternative to a power commander or a screaming eagle race tuner..but 3 or 4 pot screws cannot cover all the bases on a modified machine where a full map can cover all the bases.

  2. 2 Jim Sep 26th, 2008 at 9:08 am

    I agree with a 1 cycles. I have used a lot of these with “Stage 1” set-ups. They work fine for that. However, if a bike equipped with one of these shows up in your shop running on one cylinder, check the blue wire on the rear injector plug. Even if it doesn’t look broken, it probably is. It will be broken (often with no break in the insulation) with-in 1/8-1/4 inch from where it is crimped inside the connector. To fix them, I solder in piece of wire about 1 1/2 inchs long. The company will gladly replace the module for this, but it takes too much time. The repair can be done in about 20 minutes. Just slide the rubber piece inside the plug back up the wire, make the repair (with shrink tube), then slide it back into the plug. I have probably run into this a dozen time this summer.


  3. 3 Mike Kiwi Tomas, Kiwi Indian MotorCycles Oct 5th, 2008 at 6:01 pm

    I agree with A1. To make things worse, in Calif we are not supposed to alter much if anything on the engine. While there are some technicalities that might get a dealer around them, state officials have come down on some shops which ends up costing them huge dollars in fines.
    I’m all for clean air but when most of the rest of the world just freely polutes with any accountability it doesn’t make much sense.
    New Zealand signed onto the Carbon Credit scheme which costs the consumer .40c/gal extra for gas and 48c/gal for diesel. I can only hope the US does not sign on.

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