ThunderMax Servicing ThunderMax Equipped Bikes - Manual (Page 4)

10) If the condition or complaint has been present since module installation,
check and make sure the base map may not be a good match to the engine.
Note: If the map has a substantial amount of learned points, it may be beneficial to keep the
current map, even if it wasn’t originally intended for this setup.
Please Note: Your shop computer must have an internet connection to download the
ThunderMax software, use the automated support email function, access map updates
and watch tech support videos on YouTube.
In addition to the steps above, it is a good idea to check the overall condition of
the motorcycle. Be sure to check the following service related items:
Fuel System
1) Fuel filter requires service every 25-30k miles.
2) Verify fuel pressure, H-D spec is 55-62 lbs - If pressure is low or not holding to
spec, remedy this condition before making any adjustments to the map.
Ignition
1) How old are the spark plug wires? Inspect wires thoroughly for any rubbed spots
that may be suspect.
2) Wires should be replaced every 3 years regardless of mileage. We only
recommend the factory OE plug and plug wire.
3) Perform a compression test.
Useful Definitions
1. Fuel Pump – Located in the gas tank, this assembly pressurizes fuel being sent to the Throttle
Body.