SDSEfi.com Info about affordable EM-4 digital systems for various engines

Title

Simple Digital Systems EM-4

Description

Racetech has been in operation since 1987 and is a privately owned corporation. Our main focus then was building cars and performance engines for street and road racing. We prepared and fielded several cars in several different classes until 1994 winning every class at least once. In MP2, a class spanning engines from 2.3 to 3 liters, our cars won the class every year of its existence. Most engines that we raced were turbocharged 4 cylinder types so we have considerable experience in this field. We have been turbocharging engines for over 23 years and have built our own engine dyno and cylinder head flow bench for serious R&D work.

In 1990, preliminary work began on a programmable EFI system designed from the outset for turbocharged engines to replace the standard Weber type carbs being used. In 1992, this system was applied to a 1.7L turbo Toyota installed in a Datsun 240Z road racing car. Results were immediately encouraging with at least 1000 rpm being gained on the lower part of the effective power band over carbs with no loss in top end power.

Following many ergonomic improvements, we introduced the EM-1A in 1993. The A model was followed quickly by the improved B,C,D,E and F models by 1996. In 1997 the new, single chip EM-2 was introduced along with our EIC.

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