The iEMS3 integrated Engine Management System
Introducing the iEMS3 (integrated Engine Management System 3)
After two years of development and testing, NCTS LLC is proud to announce the availability of the iEMS3, integrated Engine Management System 3.
The iEMS3 is a modified Stand Alone Engine Management system that is designed to work in series with an OBDII compliant vehicle’s ECM. Finally, you now have an option that allows for direct injector control. No messing around with MAP sensor voltage trying to trick your way into more fuel, this is true direct injector pulse width modification tuning.
The iEMS3 leaves the factory ECM programming intact, therefore the vehicle remains OBDII compliant. The iEMS3 uses the factory injector pulse as a reference, and then utilizing its own high impedance injector drivers, sends the appropriate pulse width to the injectors based on the data programmed into the iEMS3.
For forced induction applications, the iEMS3 has an onboard 2.5 BAR MAP sensor for load calculations. The factory MAP sensor is maintained with the output clamped by the iEMS3 to prevent over ranging the signal to the factory ECM. This eliminates the need to add a 2 or 3 BAR MAP sensor tied into the factory ECM.
Replacing the factory MAP sensor is primarily performed to prevent over ranging of the MAP sensor voltage to the vehicles ECM by other tuning methods. When improperly scaled, this practice creates its own set of drivability issues which do not occur with the iEMS3. Regardless of how the factory ECM is scaled for a larger MAP sensor, it can not use that input to recognize a pressurized manifold state as would a vehicle turbocharged from the factory, increasing fuel whenever boost is detected.
In many instances, adding a larger MAP sensor (even when scaled for it), has the effect of actually lowering transmission line pressures since the MAP sensor voltage is now half or less of what is normally expected. This can contribute to transmission issues and codes, and is similar to the problems caused by MAP sensor voltage skewing piggy backs that don’t function correctly on an OBDII compliant vehicle due to the ECM adaptives.
Regarding adaptives, since the ECM has no direct feedback from the injectors (other than looking for a spike so it knows they are there!), it is impossible for the ECM to see or otherwise detect changes to the injector pulse width performed by the iEMS3. Therefore, it is impossible for the ECM to learn around what the iEMS3 does. The iEMS3 is transparent to the factory ECM. In boosted applications, if you have a ECM rewrite tune, and the ECM adaptives were not turned off properly (which causes other issues as your environmental conditions change), the ECM can learn around and rewrite over that expensive tune file. If there is a better way, why would you want to turn off a feature that helps to adjust your vehicle for changing conditions?
The iEMS3 allows true scaling of your fuel requirements across the entire RPM range. No longer are you left adding fuel by lowering the Wide Open Throttle (WOT) threshold, and you don’t wind up with the common drivability issues associated with that method (surging, run on, sudden acceleration, touchy pedal, etc.), which can occur.
The iEMS3 also solves the long tolerated Part Throttle Boost dilemma. Until now, lowering the WOT threshold always leaves an area where you can have Part Throttle Boost, but no additional fuel being added. Now, you have a seamless transition so that anytime you go into a boosted state, you immediately have fuel correction based on vehicle Load and RPM. This gives you fuel correction in both Closed Loop and Open Loop operation. Whenever boost is detected, the iEMS3 takes over control of the upstream O2 sensors adding fuel until the transition is made to Open Loop, thus eliminating the Part Throttle Boost lean condition.
The iEMS3 incorporates an advanced electronic boost control that is based on Load, RPM, and Throttle Position. It also features advanced algorithms to monitor and adjust the output to the solenoid, constantly fine tuning the output to the requested target boost. The user can easily create three dimensional boost profiles with the only limit being your imagination.
Generation 3 has also added an additional Pulse Width Modulated output (IS8G3) to allow for progressive control of Water/Methanol injection, Nitrous applications, or other applications as desired. The unit also features multiple digital outputs that can be used for controlling relays, lights, switches, etc. It is very easy to configure an output to drive a shift light directly from the unit.
The iEMS3 also incorporates an intake temperature compensation circuit so that you can apply temperature compensation for increased or decreased pulse widths in your fuel tables.
Your imagination is your limit as to what you can perform with the iEMS3, all data files are stored on “Smart Cards”, and you can easily change your programming in 1 – 2 seconds, even when driving. No longer do you have to stop and go through a long process to load a different set of tune parameters. As fast as you can insert the card and withdraw it, your changes are saved and immediately applied. Valet mode, immobilizer mode, track mode, weather mode, significant other mode, all can easily be created and stored ready for use in an instant.
Since the iEMS3 is located “In Series” with the factory ECM, and since it does not write any information to the factory ECM, it is totally undetectable (without a physical search), and is totally unaffected by dealer scans or ECM updates.
The iEMS3 is also compatible with all of the current handheld tuners, so all the myriad of options these devices offer are still fully useable. We do not recommend using a modified ECM tune that uses a non factory MAP sensor with the iEMS3. The vehicle manufacturer spent countless hours of R&D to develop the program in your ECM to function properly in a changing environment, and it makes the best base program to work from. As long as the “Canned” or “Custom” tune that you have uses a factory MAP sensor, then the iEMS3 can be configured to work with it.
Finally, the iEMS3 comes with its own Windows based software allowing you the end user to have full control of your tuning. If you need to make a tweak or adjustment here or there, no longer do you have to go through a process of finding someone to modify your file, you can change it as fast as you can plug into the USB port on the front of the unit. The software is very easy to use; all tables are laid out in an easily understandable format. Fuel is added in .2 millisecond increments positive or negative. Load is measured in either inches of vacuum or Psi for boost. Timing retard is in degrees negative, Target boost pressure is in Psi (no goofy percentages to try and figure out).
For those who have long desired direct injector control with features and software that you can utilize and control, your wait is over. I invite you to visit the iEMS3 webpage at iems3.com to read all about the features and benefits of the iEMS3.
The iEMS3 is designed and manufactured in Sweden, featuring world renowned Swedish manufacturing and quality.
The iEMS3 comes in both 4 and 8 cylinder versions, and is available as “In Series” models for OBDII compliant vehicles, and also in a true Stand Alone version for older vehicles or off road/race vehicles that do not use an OBD compliant factory ECM.
The IS4G3 and IS8G3 come with either a universal flying harness with either EV1 or EV6 connectors, or a modular harness for specific applications. Both units include the injector load board and power switch to control water/methanol pumps or Nitrous applications. Also included is the iEMS3 software, USB cable, and three Smart Cards for your files to be saved to. Additional Smart Cards are available as well.
The SA4G3 and SA8G3 come with a universal flying lead harness and your choice of EV1 or EV6 injector connectors, iEMS3 software, USB cable, and three Smart Cards for your files to be saved to. Additional Smart Cards are available as well.
North Coast Turbo Systems LLC, is the North American (US, Canada, and Mexico) authorized importer and Warehouse Distributor for Civinco AB Engine Management Systems.
Additional information is available on our website, www.northcoastturbosystems.com
North Coast Turbo Systems LLC
Tim – Principal Member/Manager, NCTS LLC
Turbocharger systems for the Modern MoPar, visit us at http://www.northcoastturbosystems.com
for the latest in engine management system integration with your factory ECU.