Ignition Systems

Ignition Timing

• Setting ignition timing for OEM Harley modules
• Setting ignition timing for aftermarket ignition modules

Ignition Modules

• Single Fire vs. Dual Fire
• Dyna 2000 by DynaTech and Screamin Eagle adjustable
• HI-4 by Crane
• Screamin Eagle by Harley-Davidson
• Ignition System components diagram

Spark Plugs

• Spark plug application and interchange chart for Harley-Davidson motorcycles

Spark Plug Wires

• The number of performance claims that exist around a simple spark plug wire could lead you to believe that all your performance problems can be solved with the simple purchase of a set of spark plug wires. Learn more to make your own decision.

Solving Sportster Detonation

• Sportster engines are notorious for low RPM detonation. Read about possible causes and fixes.