B.7. Tuning for Cold Engines and Cold Weather ........29 B.8. Tuning the Idle Air Control Motor ............30 B.8.a Configuring the New Electromotive Idle Speed Control ..........30 B.8.b. Idle Speed primer ......................31 B.8.c Getting Started ......................31 B.8.d Error Sensitivity ......................
Our warranty period is 1 year as of January 1, 2017. New Product Warranty: Electromotive offers a 1 year warranty on all new XDi and TEC units, for the original purchaser only, from the original purchase date. We warrant our products to free of defects in materials and workmanship during the warranty period.
This exclusion of damages shall apply to the maximum extent permitted by applicable law and shall continue in effect regardless of whether Electromotive has been advised or should have known of the possibility of any particular damages, regardless of whether any exclusive remedy provided in this Agreement is deemed to have failed of its essential purpose, and regardless of whether the customer is deemed to have been left without an effective remedy.
Direct Fire Units (DFU’s) are available from Electromotive in 2- and 3-coil versions. These DFU’s are completely weather proof, and feature sealed electrical connectors. Additionally, the DFU’s are impedance matched for optimum performance with our Tec3-r.
While many OEM’s use Mass Airflow (MAF) sensors to determine the airflow (and thus the load) of an engine, Electromotive systems are designed around Manifold Air Pressure (MAP) sensors as the load-determining device. MAP sensors simply plug into the intake manifold of the engine (after the throttle), and are inherently easier to install than MAF sensors since they are not sensitive to vacuum leaks or engine airflow requirements.
60(-2) tooth trigger wheel. The trigger wheel is designed to give uncompromising timing accuracy at the highest engine acceleration rates. As such, Electromotive does not support other triggering systems, particularly those of the “flying magnet” variety. These systems can lead to vastly inaccurate spark timing, and can contribute to engine damage.
See Appendix II for a listing of applications. Universal trigger wheels are also available in a variety of sizes, and are listed in Appendix II as well. Electromotive can custom-make trigger wheels in nearly any configuration for a one-time tooling fee.
DOUBLE the actual desired timing value due to the waste-spark firing of the DFU coils. They are fooled into thinking that the timing is twice as advanced as it actually is. Tec3r Manual Version 1.11 - Page 16 -...
ECU. Typically, the sync pulse is generated by the installation of a 1-notch (or 1-tooth) trigger wheel onto the camshaft. A standard Electromotive magnetic (inductive) sensor can then be used to obtain the reading from this trigger wheel. A Hall effect sensor could also be used as a triggering method instead of a magnetic sensor setup.
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12th or 13th tooth will yield 6° or 12° (respectively) of advance during cranking. Also check that the sensor is centered over the edge of the wheel. Tec3r Manual Version 1.11 - Page 21 -...
Volt Input into the Power Harness. A.5.b. Power Harness Installation Electromotive’s Power Harness (PN 070-40000) for the Tec3-r is capable of supplying the +12Volt high-amperage power required to run the DFU’s, injectors, EGO sensor heater and fuel pump. Included in the harness is a fuse block with four fuses (ignition, DFU’s, Injectors and Fuel Pump are fused) and two...
Improper crimps can lead to terminal failure and wire fatigue. To crimp properly, we recommend using a high-quality ratcheting crimp tool (such a tool is available from Electromotive). In the absence of a good crimp tool, the terminals can be soldered. Care should be taken to make absolutely certain that the solder penetrates the terminal and gets to the wire.
Once an engine has been started, ASE-0 and ASE-1 are very useful to making an engine perform flawlessly in the first few seconds after starting. ASE-1 is a decaying fuel enrichment that is added for a Tec3r Manual Version 1.11 - Page 26 -...
Section D.4.h, the density of air increases drastically with decreased temperature. The plot in Section D.4.h shows the Manifold Air Temperature Fuel Enrichment that would be required for various inlet Tec3r Manual Version 1.11 - Page 29 -...
Mazda: Min = 60, Max = 155, Allow shutdown should not be checked Electromotive Stepper: Min = 50, Max = 185, Allow shutdown does not effect this motor Pick your idle targets just like the old system; this data will likely still be there.
Once the idle is stable and revs return smoothly to the target idle speed, the car should then be drivable. Little if any adjustments should be required to finalize the idle settings. Tec3r Manual Version 1.11 - Page 31 -...
Some tuners like to use the EGO sensor at higher engine loads. This is not necessarily a bad idea, but the limitations of an EGO sensor must be realized. As long as the Desired Air Fuel Ratio Table has Tec3r Manual Version 1.11 - Page 35 -...
C. Direct Fire Units (DFU’s) Introduction DFU’s are made by Electromotive in two variants: 2-coil and 3-coil. Each coil drives two spark plugs in waste-spark ignition setups. Eight cylinder engines will use two 2-coil DFU’s. Twelve cylinder engines will use two 3-coil versions. 2-rotor engines will use 4 single tower coil units. Two cycle applications will use single tower coils as well.
For the engine to run correctly, the coils must be connected to the appropriate cylinders. Since the Electromotive DFU’s utilize waste-spark coils, it is necessary to know the firing order of an engine to determine which cylinders should be paired together.
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Leading plugs will go to Tec3r white connector pin W1 (white wire) = first rotor , leading. Tec3r pin W2 (red wire) = second rotor, leading. Trailing plugs will go to Tec3r pin W4 (white wire) = first rotor, trailing.
This means that each cylinder will receive a pulse of fuel twice per engine cycle (once per revolution on a 4- stroke). This type of firing scheme requires only the standard Electromotive 60(-2) tooth trigger wheel on the crankshaft. No cam sensor is required. For an outline of the various firing options available with the Tec3-r, see the tables in Section C.3.
As can be seen in Section C.3, we have accounted for most injection scenarios. If your desired injector firing scenario is not listed, it is advised that you call Electromotive Technical Support. Some definitions concerning the language used in Section C.3 are given in sections C.2.a. through C.2.e.
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UAP. An engine at 50% load would require 50% of the UAP, and an engine at 0% load would require 0% of the UAP (the MAP sensor determines the load percentage). Electromotive refers to this as “Linear Thermodynamics.” Keep in mind however, that the Linear Thermodynamic principle is a simplification that is useful for getting an engine up and running quickly.
D.4.b. User Adjustable Pulse Width (UAP) Users of Electromotive’s TEC-I and TEC-II systems will remember the User Adjustable Pulse Width (UAP) as the Time On for One Gama (TOG). The UAP and TOG are one and the same; only the terminology has changed.
11 volts. The battery voltage parameter allow the Tec3r to adjust the injector open times up or down to compensate for low or high battery voltages. The value specifies how many microseconds to add or subtract to calculated open time based on the current battery voltage.
To keep things straightforward, try to run the fuel pressure for which your injectors are rated. Electromotive offers several regulators with different pressure ratings to make your search as easy as possible.
(C-). These types of coils require the use of a tachometer amplifier, since they are designed to trigger off of a 120 Volt signal. Tachometer amplifiers (PN: 150-15210) are available from Electromotive to suit these applications. Figure F.2 1: Typical tachometer wiring.
30 or 40 amps, which should be more than adequate for most applications. High quality relays and relay sockets are available from Electromotive under part numbers 340-91200 and 340-91201, respectively. Part number 340-91200 is a 5-position relay, so it can be used for all applications depicted below.
MAP sensor as a load- determining device is well justified. MAP sensors are available from Electromotive in three varieties: 1-, 2-, and 3-Bar. A 1-Bar sensor would be used on a naturally...
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Many different TPS’s have been used by OEM’s in the past few decades. The most common types are driven directly on the throttle shaft by either a dowel pin going through the shaft of a “D” shaped throttle shaft. Various TPS styles are available from Electromotive, as outlined in Figures G.2. 3-5. Arm-Style TPS...
Tuning the CLT-Based enrichments is covered in Section B.7. The Tec3-r is set up to use the GM-style coolant temperature sensors. These sensors are sold by Electromotive under part number 305-71210. They are threaded for a 3/8” NPT hole. Liquid-cooled engines should have the CLT sensor installed somewhere in the coolant passages.
Instead, it should be mounted after the collector. Failure to mount the EGO sensor close to the engine will result in poor performance due to under-heating the sensor. The EGO sensor needs plenty of heat to operate properly. Mild steel threaded bungs for the EGO sensor are available from Electromotive under PN 315-72111.
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DO NOT ATTEMPT TO RUN THE EGO HEATER WITH THE +5V LINE IN THE TEC-3 HARNESS!! Electromotive’s EGO sensors also follow this color code, and are mated to a 4-position female weather-pack connector in the following pin out: Gray : Pin D...
Just keep in mind that ignition timing should always be VERY conservative with a rotary engine. The Tec3-r uses any 1-wire FREQUENCY-BASED knock sensor input. Electromotive stocks a GM 1-wire knock sensor under PN 305-71410. See Figure G.6.1 for wiring details.
The Electromotive rev limiter is very flexible. For ignition control, the timing can be dropped to zero (0) degrees on rev limit, or our 3-stage coil cut can be used. Fuel control can also be controlled with either no fuel cut, a full fuel cut or the new progressive fuel cut.
Appendix I. Electromotive Tec3-r ECU Specifications Outputs Fuel Injector Drivers o 8 x 4.4/1.1amp peak-and-hold injector drivers 6 drivers with Tec3-r o Up to 16 low or high impedance injectors can be driven Up to 12 injectors with Tec3-r o Low impedance injectors: 2 per driver (1 - 2.6...
The firmware is the embedded code that is installed in the Tec3r’s processors. Small changes in functionality can be covered with software changes. Larger changes in functionality, particularly the addition of new features, generally require a firmware upgrade.
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Software Upgrade Procedure As was previously stated, the firmware and software versions are completely upgradeable through a simple software download from the Electromotive website. Software upgrades are simple, and can be accomplished with the following steps. 1. Download the software from the Electromotive website onto a PC.
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Engine damage can be caused by detonation. DFU: Direct Fire Unit. Electromotive coil packs are referred to as DFUs. Duty Cycle: The percentage of time that a pulse width modulated output is turned on. A duty cycle of 100% indicates a fully turned-on modulation output.
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