Patent ID: 8584651

Claim:
In combination, an internal combustion engine having: at least one combustion cylinder generally closed at one end; at least one piston operatively reciprocating within said at least one combustion cylinder and thereby defining at least one combustion chamber between said at least one combustion cylinder closed end and said at least one piston, said piston coupled with and at least partially driving rotation of a crank shaft; at least one input and at least one exhaust permitting the flow of combustible mixture into said at least one combustion chamber and the flow of gases from said at least one combustion chamber; at least one spark plug protruding into said at least one combustion chamber and operatively providing an ignition spark to ignite said combustible mixture therein; a timing apparatus for effectively detecting a position of said at least one piston within said at least one combustion cylinder and generating a timing signal responsive thereto; and an ignition module having a housing and an electronic ignition circuit responsive to said timing signal for initiating said ignition spark; wherein the improvement comprises said ignition module housing having an external stock appearance, and said ignition module electronic ignition circuit having a crankshaft rotation rate monitor and having a rev limiter for limiting crankshaft rotation rate when said monitor determines that a first predetermined rotation rate has been exceeded, wherein said rev limiter includes a plurality of predetermined rotation rates, and wherein said ignition module further comprises a plurality of indicator lights indicative in a first mode of said first predetermined rotation rate, and in a second mode of said crankshaft rotation rate.