Question by knucklebuster: has any1 used the “twin scan II for harley davidson motorcycles” or the “WEGO 2 air/fuel ratio metering system
need help on deciding which one to purchase.
Answer by Walter F
Time for a promo,
both of them are aftermarket systems which mean that you have to tie them into the stock wiring harness, making and breaking connections. If you are unafraid then go ahead because it don't matter because they both trick the ECM into thinking its a stock bike.
My suggestion is to buy the Screaming Eagle race tuner because it will allow you to change the mapping to anything you want (richer or leaner, high rpm, low rpm, full throttle, half throttle, whatever). The ECM will run whatever map you tell it to. All you need is a computer to download the map to your bike (preferably a laptop).
What ever you choose, Please take the bike to a dyno and have it tuned, you can get close by seat of the pants but it wont be right, and you stand the chance of damaging the motor if you screw up really bad.
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