By Jeff Hartman
Realizing gas injection and engine administration structures is the most important to extracting greater functionality from today’s vehicles in a secure, trustworthy, and driveable fashion.
Turbochargers, superchargers, nitrous oxide, excessive compression ratios, radical camshafts: all are recognized to make horsepower, yet with no right figuring out and keep watch over of gas injection and different digital engine administration structures, those well known power-adders won't ever dwell as much as their strength and, at worst, could cause dear engine damage.
Drawing on a wealth of information and event and a heritage of greater than 1,000 journal articles at the topic, engine-control professional Jeff Hartman explains every little thing from the fundamentals of gas injection to the construction of complicated venture autos. Hartman covers the newest advancements in fuel-injection and engine administration expertise utilized by way of either international and family brands, together with well known aftermarket systems.
No different e-book out there covers the topic of engine administration structures from as many angles and as comprehensively as this book.
Through his non-stop journal writing, writer Jeff Hartman is often up to date with the latest fuel-injection and engine administration items and platforms.
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Additional info for How to Tune and Modify Automotive Engine Management Systems
7 pounds of air to 1 pound of fuel, the ideal ratio for perfect combustion. Under the right conditions, this mixture will combust to release all chemical energy stored in the fuel, leaving no unused oxygen and no unburned hydrocarbons. Stoichiometric combustion produces heat energy, carbon dioxide, and water vapor— nonpolluting and harmless. Theoretically. Under ideal conditions that naturally assume factors such as enough time for combustion to finish completely, perfectly mixed air and fuel, and so on.
The power module plugs into the end of the ECM and includes longer screws that hold it in place using the side screw holes. Reinstall the computer in its place and go have fun. Some Japanese ECMs require soldering and additional electronics installed by an expert technician before the PROM calibration can be changed. But once these changes are made, a PROM change involves unplugging and removing the ECU, opening it, and swapping in a new PROM chip. may be mandatory to change the PROM data, the ECU itself, or add auxiliary electronics or mechanical changes to fuel-delivery and ignition components so the engine will operate properly.
All onboard diagnostic level II (OBD-II) engines sold in the United States since 1996 are much better than older systems at detecting performance modifications that might adversely affect exhaust emissions. The good news is that digital EMS logic has always been designed in such a way that the code takes into account many different possible (and configurable) characteristics of a vehicle and engine package in managing the engine. indd 36 (Text) (Ray) 4/13/13 2:44 PM 4/4/13 8:50 AM (Fogra 39)Job:03-30412 Title:MBI-How To Tune And Modify Engine Management Systems 04-C68862 #175 Dtp:225 Page:36 AuTomoTive comPuTers & Proms ms :36 The next level was designed to significantly improve engine breathing with intake porting, larger (and sometimes shorter) runners, higher lift rockers, and a new PROM, yielding as much as 100 horsepower and a 2-second faster quarter.