Simple Digital Systems
The affordable engine management
system that YOU can program

EM-4


SDS is the easiest digital management system to install and program on the market today - period



EM-4D - Digital fuel injection control

The D system offers complete control of port type injectors on 2,3,4,5,6, and 8 cylinder engines plus 2 and 3 rotor Wankels and many 2 stroke engines. RPM ranges to 9750 or 15,000 are available. EM-3 can control fuel on engines with up to 30 psi of boost. Installation of the D system is simple and quick, just 2 grounds, 2 powers and the tach wire hookup. All other sensor hookups are straight plug-ins with the supplied wiring harness and pre-installed connectors.


Programming SDS

Our LCD programmer is what makes SDS better than the "other guys." You save hundreds of dollars right off the bat because our system does not require a laptop or its programming software. There are no confusing menus to fight with, no discs to load and it is straightforward to understand. You can select which parameter you wish to change in plain English with the flick of a single button. You can change its corresponding value with the flick of another button. Done.

The example to the right shows the programmer in one of three gauge modes. These modes allow you to monitor essential sensor inputs in real-time for programming purposes. The gauge button permits you to jump between the points that you are programming and back to gauge, allowing you to establish where the ECU is currently operating for re-programming of that point. Parameters are selected by pressing the {} buttons. By pressing once, you advance one range at a time. By holding down either button for more than 2 seconds, ranges advance at a rate of 8 per second. Releasing the button stops the display at your desired location.


The example to the left displays the RPM FUEL parameter, range 3750. The +1, -1, +10 and -10 buttons allow you to change each value number in the lower right of the LCD window by that amount each time it is depressed or very rapidly by holding it down. The value may be any number between 0 and 255 for most parameters. The larger the value, the more fuel will be injected at that parameter and range. Values can be changed with the engine off or running and are reliably retained in memory forever, even with no power to the unit. Ignition values are entered directly in crankshaft degrees.


EM-4E - Digital fuel injection and ignition control for 4, 6 and 8 cylinder engines equipped with distributors

The E system offers control of both fuel injection and ignition timing in a single, integrated package. Ignition is crank triggered with capability to 9750 rpm. It is programmable in 250 rpm increments and provides 64 locations for ignition retard on turbocharged applications. OEM style ignition wires can be used. For V8 and high boost applications, the system is configured to trigger an MSD-6A directly from the ECU. MSD 2 step rev limiters are compatible with the E system. An MSD Blaster 2 coil is included in non-MSD systems but not included with MSD configured units. The E system requires fabrication of a bracket to mount the crank sensor and installation of trigger magnets into the crank pulley.


Easy hookup and high quality are SDS trademarks

All SDS units feature quality, CNC machined, cast aluminum or billet enclosures and a full 1 year, parts and labor warranty. EM-3 units come complete with all wiring pre-made to your specs with connectors installed. Comprehensive installation manuals are included with each system. Installation time will vary from 2-3 hours for most D systems to 6-10 for E and F systems. We can also supply most other hardware that you might need for your installation such as pumps and injectors. If you need help, we are available by phone fax or E-mail. You will get prompt shipment of your system and prompt responses to your questions before and after the sale. We are here to help you get results. Our highly acclaimed website is available worldwide, 24 hours a day for the latest system information, updates, tech articles and tuning help.


EM-4 Improvements

While the EM-2 was an excellent system, technology marches on and we felt it was time to make improvements. The EM-3 introduces full digital control of acceleration pump and knock sensing (E and F systems). This eliminates the trim pots used on the EM-2. There is now a voltage compensation for both ignition and injection for a stronger starting spark and more consistent running. Coil outputs have been increased. The injector drivers are now housed inside of the ECU for cleaner installation. Injector and ignition drive circuits now employ more efficient MOSFET transistors. F Hall sensors have been revised for easier magnet mounting. Additional control over some parameters is provided plus there are improvements to option additions and wiring. All EM-3 systems still feature a noise resistant, single chip, ECU design and batch fired injectors for reliability and ease of hookup.


EM-4F - Digital fuel injection control and direct fire ignition for 4 and 6 cylinder engines

The F4 system offers control of fuel delivery and ignition timing on 4 cylinder engines to 9750 rpm (15,000 ptional). Its crank triggered, direct fire coil pack replaces both distributor type ignition as well as OEM distributorless systems. Like the E system, it is programmable in 250 rpm increments with 64 locations for ignition retard on turbocharged engines. The standard F delivers a powerful, long duration spark and is suitable for use on engines with specific outputs of up to 200 hp/liter. Special versions allow the use of dual channel MSD CD and rev limiter boxes for drag racing and super high output applications. All F models come complete with coils and crank triggers. Fabrication of a crank sensor mount and installation of trigger magnets are required.

The F6 system offers control of fuel delivery and ignition timing on even-fire 6 cylinder engines to 9000 rpm. Its crank triggered, direct fire coil pack replaces both distributor type ignition as well as OEM distributorless systems. Like the F4 system, it is programmable in 250 rpm increments with 64 locations for ignition retard on turbocharged engines. The standard F delivers a powerful, long duration spark and is suitable for use on engines with specific outputs of up to 200 hp/liter. F6 models come complete with coils and crank triggers. Fabrication of a crank sensor mount and installation of trigger magnets are required.


Standard System Includes:
ECU
LCD programmer
Air temp sensor
Water temp sensor (or CHT)
Main wiring harness
Injector harness
Fuel trim control (+, -50%)
Installation manual
Coil / amp pack (E, F)
Crank sensor (E, F)
 Optional Items and Features:
MAP sensors
Throttle position sensors
Oxygen sensors
Injectors
Fuel pumps
Fuel pressure regulators
Mixture meters
Staged injection
Fast idle system
Fuel pump relays
a/c solenoids
RPM switch
Knock control
Adjustable Parameters Include:
RPM -
Manifold pressures/TPS -
Water temperature/CHT -
Start functions -
Acceleration enrichment -
Closed loop -
Ignition timing -
Ignition retard -
Rev protection
Boost protection
 Every 250
64 locations
32 locations
33 adjustments
3 adjustments
5 adjustments
Every 250 rpm (E, F)
64 locations (E, F)
Installation Manual
 
EM-4 D
EM-4 E  
EM-4 F 4cyl  6 cyl
[Price List]


 

    Tech+Info
SDS Advantages
Project page
Tech/FAQ'S
sample fuel maps


P.T.R. Injection

6463 N Perry unit M
Spokane, WA 99217
Phone (509) 868-5453
Business Hours: Monday - Friday
9:00 AM - 6:00 PM PST
             E-Mail info@ptrsds.com



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