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EFI Systems
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Dyno Tuning

EFI Systems

Let's Get Technical N Alpha A relatively simple design, N Alpha systems use only engine speed and throttle angle to calculate the amount of fuel needed by the engine. This…
July 15, 2023

FXRA: Aluminum Frame Custom

Located in Costa Mesa, California, is a shop called The Harley Doctor, and the owner, Geoffrey Gaites, has been healing sick bikes since 1996. He has a PHD in Harley…
June 26, 2018

Racing Suspension Tuning

Unfortunately there is no literature that can give you the perfect machine setup. Also suspension setup is individually dependent on the rider (style, preference) and track conditions, which vary from…
February 19, 2010
Dyno Tuning

Air/Fuel Ratio

BEFORE: Front cylinder AFR samples taken at 10,15,20,30,40,60,80,100% throttle. Target AFR=13:1 AFTER: Delphi EFI (speed density) after VE table corrections. Target=13:1 In addition to the ignition timing, the other aspect…
December 12, 2007

Battery Tutorial

The commercial use of the lead acid battery is over 100 years old. The same chemical principal that is being used to store energy is basicly the same as our…
April 5, 2003