How to Tune and Modify Engine Management Systems (Revised by Jeff Hartman

By Jeff Hartman

Drawing on a wealth of data and adventure and a history of greater than 1,000 journal articles at the topic, engine regulate professional Jeff Hartman explains every little thing from the fundamentals of engine administration to the construction of advanced undertaking automobiles.

Hartman has considerably up-to-date the cloth from his 1993 MBI ebook gasoline Injection (0-879387-43-2) to deal with the remarkable advancements in automobile gas injection know-how from the prior decade, together with the multitude of import vehicles which are the topic of quite a bit sizzling rodding at the present time. Hartman's textual content is very certain and logically prepared to aid readers higher comprehend this complicated subject.

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How to Tune and Modify Engine Management Systems (Revised Edition) (Motorbooks Workshop)

Drawing on a wealth of data and event and a history of greater than 1,000 journal articles at the topic, engine keep watch over specialist Jeff Hartman explains every little thing from the fundamentals of engine administration to the construction of complex undertaking automobiles.

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Extra resources for How to Tune and Modify Engine Management Systems (Revised Edition) (Motorbooks Workshop)

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Lack of direct combustion data makes self-calibration problematic; however, there are now combustion pressure sensors available that are built into special spark plugs that can provide an engine management computer with direct access to combustion pressure in real time. As well, ion sensing is one of the cheapest and simplest methods for monitoring the combustion event in a spark-ignited engine, and models exist that connect the ionization current to cylinder pressure and temperature. Ion sensors show great promise for engine management.

Most modern EMSs allow the option to use the output from a throttle position sensor as an indication of engine loading for some or all of the operating range. Virtually all OEM ECUs and some aftermarket ECUs have the ability to operate in closed-loop feedback mode, which means they can factor in exhaust gas composition as an indication of the trim air/fuel mixture achieved in the last injection event, which can be used to correct the injection pulse width to target AFR. In the past, feedback ECUs exclusively targeted the chemically Sometimes the computer box itself functions as the user interface.

But if you’re looking for more muscle, check out Levels II, III, or IV. ” In the new millennium, TPIS is still in business and still focused on selling hot rod and replacement parts for performance fuel-injected Chevy V-8s. The name TPIS is an acronym derived from the company’s original name, Tuned Port Injection Specialties, and its original business is hot rod computer and specialty performance parts for the tuned port injection EFI small-block Chevy V-8 used in F-Bodies, Corvettes, and a few other vehicles from 1985 to 1993.

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