The affordable engine management system that YOU can program!

The SDS EM-4 can replace the entire factory EFI system on most engines or upgrade older carbureted engines to port type fuel injection with ignition control.

SDS eliminates MAF sensors and old style AFMs.

By selecting the correct MAP sensor, boost pressures up to 60 psi may be used. EM-4 is designed to control port type injection only. It can be configured to drive low or high impedance injectors and gives a good idle even with very large injectors fitted.

With SDS, the programming software is embedded, reliable and proven- nothing to load and values are retained in memory even with power off. Programming can be accomplished with the engine turned off or running. Four gauge modes permit real-time monitoring of all sensor inputs to the ECU. A mixture trim knob permits a full + or - 50% change in pulse width from the programmed values. Major SDS components are housed in quality aluminum enclosures and we offer a 1 year warranty on parts and labor.

The EM-4 series has been extensively proven in over 16 years of development, testing and real world use on a variety of street, race and special applications. It has been successfully used on cars, boats and amateur built aircraft.

For Ford EEC equipped vehicles, check out the SDS plug-in systems offered by Western Motorsports on our Dealer/Links Page or: www.wmsracing.com

Please note: Installation of SDS will void most vehicle warranties and emission compliance in some areas. Check your local laws for street driven vehicles.

For information on kit contents, optional items and programmable parameters, click on Specifications

PLX Wideband Meter $299US

Details

Weld in injector bosses available with steel ($45) or aluminum ($40) bases. Revised shape permits easier welding to tubes.

www.sdsefi.com is tops!

This site is now what we believe to be the most popular fuel injection website on the planet with over 1 million file hits and over 14.2Gb downloaded per month from 95 countries. In 2009, we had over 12 million file hits, 500,000 visits and over 180Gb downloaded from our site. We will continue to work hard at keeping it fresh with new updates, projects and tech articles. Thanks to the hundreds of people who have told us that our site is the most informative on the net.

SFZ Our policy on this site is fresh, useful content, readable text on a light background, fast downloading, all HTML, No crap, No JAVA, No Flash, No Shockwave, No pop-ups, No useless graphics, No banner ads

For more website info: sdsefi.com/racetech.htm

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E-mail:racetech1@telus.net
Please note: If you have an anti-spam filter in place on your E-mail, we may not be able to reply to your questions. Also note that we get thousands of E-mails each year and must discard some every week to be able to sort and find things. If your correspondence runs over several weeks before ordering, it is best to attach your last message so that we can follow and find key replies. We reply to ALL legitimate E-mails sent to us within 48 hours or less. If you don't receive a reply, there may be a problem with your mail server, address or anti-spam filter. Please phone or fax us.

Disclaimer/Legal

The information on this site is intended primarily for educational purposes. Racetech Inc. makes no claims as to its accuracy and in no way assumes any liability for consequences resulting from the use of any information presented here. Racetech Inc. has sole rights to all print and image content on this site unless otherwise noted. The public is free to copy any pages for personal use and distribution. Use of any material on this site for commercial purposes is prohibited and a violation of copyright unless written authorization is obtained. All SDS source code is protected by copyright. Any unauthorized use for commercial purposes will be dealt with accordingly.

Please note we have have moved as of Jan. 12/09

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