OEM is cheaper, I have yet read from any builder and or LT500 Site that the AMR is any better than OEM for the LT500, Its like the OEM CDI it works great!
If someone has any dyno testing to show that the AMR works better, love to see those graphs.
http://www.motorsportssupercenter.com/pages/OemParts?aribrand=SUZ#/Suzuki/LT500RL_%281988%29/ELECTRICAL/01720002/5601720017
I would like to see the comparison to!
The peak spark voltage and the amount of energy delivered to the spark plug depends upon the amount of power generated by the source coil on the stator, the capacitor size in the CDI box and the ratio of turns in the ignition coil on the LT 500. The ignition coils resistances and the ratios of turns on the ignition coils on most Japanese off road engines are very similar. This means that they are functionally equivalent but may not have the same bolt spacing on their mounts.
There are some companies that make different coils and spark plug wires that will increase the voltage at the spark plug. When testing these snake oil systems on an oscilloscope, we will observe higher spark plug voltage, but a spark that is shorter in duration. This is misleading to those that do not understand how voltage, current, and power relate to each other. The total energy delivered to the spark plug is still the same when the spark duration is compressed. As mentioned above the stator is usually the component that limits the amount of energy delivered to the ignition system not the ignition coil.
Automotive ignition coils and ignition systems are different. The battery or charging system has an almost unlimited amount of power to supply all of the power the ignition system needs. Changing the ratio of turns on the coil and other components within the ignition module will allow huge quantities of energy to be delivered to the spark plug.. This is one of the main reasons why automobiles can go 100,000 miles on a set of spark plugs with a 1/8 inch spark plug gap.