
The 8F. You've been asking for it and it is now here. Available in two versions.
1. Standard 8F to fit most V8 engines. Comes with Hall sensor and twin coil packs. $1990
2. 8FLS to fit GM LS1 and LS6 engines using the 24 tooth factory reluctor wheel. This is a plug and play system using factory crank, cam, coolant temp, MAP, knock and TP sensors. It plugs into the factory coil sub harnesses. It does not come with coils but does come with all new main and injector wiring plus IAT sensor. Engines with drive by wire throttle bodies must fit a manual TB and compatible TPS. Mainly intended for off road, racing, kit cars, rods and engine swaps. $1480.

Standard 8F system. Wiring harnesses included but not shown in this photo.
See the video of the 8FLS system in action: http://www.youtube.com/watch?v=4ygV-9X3j2w
Our LS6 test engine is for sale. Brand new crate engine with starter, and coils. Only about 4 hours total running time.
Version 17 software is now shipping. This includes all upgrades from V16 plus new capabilities for 2 step rev limiting and revised code for better ignition control.
Updates within the last 30 days were:
Aug. 29/08 Home (Monday closure), Aug. 17/08 Aircraft (RV10 update), Aug. 14/08 Racetech (updates)
Don't let the word "Simple" in SDS fool you into thinking that our systems are not up to the task of making hp. You don't need an expensive, complicated EFI system to win national championships and set records. Below are just a few examples of highly successful vehicles using SDS to thrash the competition:
Video of 575 hp Neon with SDS:
http://www.youtube.com/watch?v=ineK0E3h7Wc&NR=1
Video of Renault winning Romanian H3 Hill Climb Championship using SDS EM-4 4F system: Click here

Got Torque?



Stand alone, programmable fuel injection for automotive, marine and non-certified aircraft applications. Suitable for street and track use.

The EM-4 is the latest evolution of our highly successful EM-1, EM-2 and EM-3 systems used in some of the fastest performance vehicles in 44 countries worldwide. The fourth generation system features improved digital, hard filtering and circuit protection, easier, more flexible programming, a noise resistant, single chip, ECU design and batch fired injectors for reliability and ease of hookup. Our systems are very popular when swapping engines without factory electronics into different chassis.
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 14 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
SDS Mixture Meter, World's Smallest $80US
PLX Wideband Meter $299US

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 2007, 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
We delete any messages with unrelated, questionable or no subject lines due to the tremendous amount of spam received.
If you E-mail image or graphical files to us, please attach them in JPEG or GIF formats only. Compressing these files by 5X to 10X or specifying 75 DPI resolution is helpful. Attachments or files over 1Mb are automatically deleted from our server.
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.
Racetech Inc. Business Hours We are open 8:30 AM to 4:30 PM mountain time, Monday to Friday Please note: We will be closed Monday, Sept. 1 for the long weekend holiday. E-mail:racetech1@telus.net
For SDS users, an information exchange forum has been created. We do not administer this site: Network54
Privacy Policy All information sent to Racetech Inc. regarding E-mail addresses and ordering information is used only for our correspondence with you and placing your order with us. This information is kept confidential and is not released to any other party without your authorization. Copyright 1996- 2008. All rights reserved.
Bay G, 1007-55 Ave. NE
Calgary, Alberta, Canada
T2E 6W1
Phone 403-274-0154, Fax 403-274-0556


Your assurance of quality
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