How To Tune And Modify Motorcycle Fuel Injection Systems

Nationally recognized fuel-injection tuning specialist Doug Lofgren takes the mystery out of tuning computerized fuel injection systems.

From electronic ignition to electronic fuel injection, slipper clutches to traction control, today’s motorcycles are made up of much more than an engine, frame, and two wheels. And, just as the bikes themselves have changed, so have the tools with which we tune them. How to Tune and Modify Motorcycle Engine Management Systems addresses all of a modern motorcycle’s engine-control systems and tells you how to get the most out of today’s bikes. Topics covered include: How fuel injection works Aftermarket fuel injection systems Open-loop and closed-loop EFI systems Fuel injection products and services Tuning and troubleshooting Getting more power from your motorcycle engine Diagnostic tools Electronic throttle control (ETC) Knock control systems Modern fuels Interactive computer-controlled exhaust systems

Get the most from your FI system! This handy guide will help you coax better mileage and top performance from most any Bosch system, including Asian imports, Motronic, and D, L, LH, K, K w-Lambda, and KE-Jetronic systems. Hundreds of helpful illustrations and tips will make the job easier. Working with the Bosch system just got easier!

Drawing on a wealth of knowledge and experience and a background of more than 1,000 magazine articles on the subject, engine control expert Jeff Hartman explains everything from the basics of engine management to the building of complicated project cars. Hartman has substantially updated the material from his 1993 MBI book Fuel Injection (0-879387-43-2) to address the incredible developments in automotive fuel injection technology from the past decade, including the multitude of import cars that are the subject of so much hot rodding today. Hartman's text is extremely detailed and logically arranged to help readers better understand this complex topic.

A practical guide to modifying and tuning modern electronic fuel injection (EFI) systems, including engine control units (ECUs). The book starts out with plenty of foundational topics on wiring, fuel systems, sensors, different types of ignition systems, and other topics to help ensure the reader understands how EFI Systems work. Next the book builds on that foundation, helping the reader to understand the different options available: Re-tuning factory ECUs, add on piggyback computers, or all out standalone engine management systems. Next Matt and Jerry help the reader to understand how to configure a Standalone EMS, get the engine started, prep for tuning, and tune the engine for maximum power and drivability. Also covered is advice on tuning other functions-- acceleration enrichments, closed loop fuel correction, and more. Finally, the book ends with a number of case studies highlighting different vehicles and the EMS solutions that were chosen for each, helping to bring it all together with a heavy emphasis on how you can practically approach your projects and make them successful!

Understanding fuel injection and engine management systems is the key to extracting higher performance from today’s automobiles in a safe, reliable, and driveable fashion. Turbochargers, superchargers, nitrous oxide, high compression ratios, radical camshafts: all are known to make horsepower, but without proper understanding and control of fuel injection and other electronic engine management systems, these popular power-adders will never live up to their potential and, at worst, can cause expensive engine damage. Drawing on a wealth of knowledge and experience and a background of more than 1,000 magazine articles on the subject, engine-control expert Jeff Hartman explains everything from the basics of fuel injection to the building of complex project cars. Hartman covers the latest developments in fuel-injection and engine management technology applied by both foreign and domestic manufacturers, including popular aftermarket systems. No other book in the market covers the subject of engine management systems from as many angles and as comprehensively as this book. Through his continuous magazine writing, author Jeff Hartman is always up-to-date with the newest fuel-injection and engine management products and systems.