GPRP Rotary Drag
Based on MoTeC's GPR Rotary Package, the GPR Rotary Drag Package is a versatile tuning platform that has been developed for drag racing applications using rotary engines.
This single product can be configured in a wide variety of rotary engine configurations, from controlling a single, naturally aspirated 13B to a beefed-up quad rotor with 4-stage fuel injection.
Features
Based on MoTeC's GPR Rotary Package, the GPR Rotary Drag Package is a versatile tuning platform that has been developed for drag racing applications using rotary engines.
This single product can be configured in a wide variety of rotary engine configurations, from controlling a single, naturally aspirated 13B to a beefed-up quad rotor with 4-stage fuel injection.
Included in the GPR Rotary Drag are several ancillary features common to race cars, such as:
- Anti-lag
- Driver switches (e.g. well switch, boot enable and boost limit)
- Gearbox control
- Detonation control
- Intercooler sprays
- Launch control
- Gearbox Cooling Pumps
- Traction control
Key features for drag racing include:
- Time-based cuts and compensations
- Improved large turbo boost build for launch
- Traction control for vehicles with torque converters
- Launch in “two stages”
- Individual cylinder exhaust temperature fuel compensation
- Suspension position with 1000Hz recording capability
Many systems found on modified road vehicles, such as air conditioning, are also accommodated.
The product fully integrates with other MoTeC products and provides predefined CAN messages for all current monitors, recorders, video capture systems, PDMs, E888, GPS, ADR, BR2 and SLM. A vector database file (.dbc) is available upon request.
The GPR Rotary Drag Package is based on MoTeC's GPR Rotary Package with the addition of these rotary engine specific features:
- Additional vehicle speed and run time conditions on auxiliary outputs.
- Auxiliary outlet fuel and ignition trims.
- Boost Servo System – Use a servo motor to control a wastegate or use an additional throttle servo to bleed boost air from the compressor. This can help with compressor surge, act as a wastegate, or control boost with greater response.
- Clutch position limit for launch condition – can be upgraded with a switch, for drag vehicles with clutch and critical 'bite' position.
- Improved tuning resolution for highly tuned engines.
- Improved sensor and calculation resolution critical for drag racing.
- Individual rotor fuel trim for respective exhaust temperature.
- Warnings with engine speed and acceleration limits for primary, secondary, tertiary and quatarnery injector duty cycle.
- Support automatic transmission gear detection and converter slip monitoring.
- Gear output shaft speed, fuel and ignition trims, plus acceleration and thrust limits.
- Closed-loop control of engine torque by altering the ignition timing used for traction control and launch control. By varying ignition timing rather than cutting ignition events, turbo lag in large turbos is reduced.
- Improved launch control for more vehicle configurations – faster boost build, multi-stage priming, nitrous integration, and traction control integration.
- Improved Nitro Control – bottle pressure warning and additional conditions for use during launch control and time after launch.
- Improved Race Time triggering strategy – more configurable, false start detection and reset, and integration with Traction Control for acceleration limitation.
- Enhanced traction control using ignition timing control. Limitation based on wheel speed or engine speed for use with automatic transmissions.
- Shift light output
- Additional sensor inputs:
- Sleep position x 4, recording at 1000Hz (with optional level 3 recording).
- Transmission temperature x 2
- Transmission pressure x 2
- Tire pressure x 4
- Tire temperature x 4
- Wheelie bar pressure x 2
- Transmission brake control with enhanced 'bump' functionality (pulse or PWM modes) for perfect vehicle preparation.
- Fuel and ignition based on vehicle speed and throttle limit.
- Calculation of vehicle speed estimation using wheel speeds, GPS speed and time-based speed after launch. Different estimation modes for various vehicle configurations.
- Dump valve pressure control by dual CO2 style solenoids and pressure feedback.
- Live adjustment for tire growth with speed.
The following features of MoTeC's GPR Rotary Package are retained in the GPR Rotary Drag Package:
Rotary Specific
- Operates 1 to 4 rotor port injected rotary engines.
- Configurable engine timing modes for common rotary engines. See the Engine Speed Modes section for details.
- Configurable lead and trail ignition outputs for each rotor. Trailing ignition timing can be set as an angle relative to main ignition (i.e. split angle) or TDC.
- Configurable on-board knock detection for each rotor with up to two assignable knock sensors and 4 selectable center frequencies.
- Control of up to eight injectors in 4 injector stages per rotor with user-defined tables to control the fuel contribution of each injector.
- Engine coolant and oil temperature compensations for engine speed limitation, ignition timing, fuel volume and boost limitation.
- Supports control of a sequential shutter valve with fuel injector integration as found in the Mazda RX8.
- Supports control of VFAD, VDI and APV intake manifold valves found on Mazda rotaries.
- Diagnostic verification of SSV, VFAD, VDI and APV valves via feedback position sensors.
- User configurable engine efficiency table with adjustments based on SSV, VFAD, VDI and APV valve status.
- Supports control of a stepper motor-based metering oil pump. This includes diagnostics and a warning system to detect component failures.
- Supports dual-speed cooling fans via three relay outputs, as found on Mazda rotaries.
- CAN integration, for the Mazda RX8, to enable power steering, transmission and ABS operation. Wheel speeds, steering angle, fuel level, tire pressure monitoring and parking brake data are also received from the CAN bus for use by the ECU.
General use
- Closed-loop lambda control support; requires optional LTC with Bosch LSU4.9 sensor or LTCN with NTK sensor.
- Physical settings for engine displacement, fuel properties and injector characteristics allow for simplified engine start-up prior to tuning.
- Quick and easy engine tuning using the engine efficiency map.
- Modeling of engine load based on intake manifold pressure and intake manifold temperature. Alternatively, throttle position can be used, for example when using individual throttle bodies.
- Differential pump output with user-defined differential temperature control.
- Transmission pump outlet with user definable transmission temperature control.
- Traction control with tables for main sight, sight compensation and control range.
- Measuring vehicle speed using wheel speed sensors, estimation or GPS.
- Vehicle speed limit control system (based on DBW accelerator), which can also be used for well speed limitation.
- Configurable warning system with light output and CAN.
- Auxiliary timing system with tables for ignition timing compensation, fuel volume compensation and fuel mixture target.
- Supports sequential and batch fuel injection.
- GPS acquisition and recording via CAN or RS232.
- 4 auxiliary outputs for PWM control of actuators added:
- Duty cycle tables using engine rotation axes and throttle or manifold pressure.
- Activation based on intake manifold pressure or throttle position.
- Auxiliary Output 1 includes tables for Ignition Timing Compensation, Fuel Volume Compensation, and Mixture Target.
- Optional channels for additional sensors via input pin and/or CAN message, including:
- Airbox mass flow, pressure and temperature
- Ambient pressure and temperature
- Boost pressure
- Front and rear brake pressure
- Brake switch
- Clutch pressure and position
- Clutch switch
- Coolant pressure and temperature
- Differential temperature
- Engine oil pressure and temperature
- Engine crankcase pressure
- Exhaust Pressure Bank 1 and Bank 2
- Exhaust Temperature (EGT) via TCA thermocouple amplifier, generic CAN or E888 for a single manifold, bank 1 and 2 manifolds and runners 1 through 4.
- Exhaust Lambda via LTC, LTCN or PLM to a single manifold, bank 1 and 2 manifolds and rotors 1 to 4.
- Fuel pressure and temperature
- Fuel tank level
- Gear position
- Gear lever force
- Gear neutral switch
- Gear change request
- Intake manifold flap position x 2, intake manifold runner position
- Intercooler temperature
- Steering angle and pressure
- Transmission pressure and temperature
- Turbocharger speed
- Turbocharger inlet/outlet temperature
- Turbocharger wastegate position
- G-force (acceleration) – Longitudinal, Lateral, Vertical
- Front/rear left/right wheel speed sensors, wired or CAN input.
Engine Compatibility
This product is suitable for single, double, triple or four rotor engines with port injectors.
Known OE engines that are suitable:
| Engine family | Engine designation | Year | Vehicle platform | Comment |
|---|---|---|---|---|
| Mazda 12A | 10ONE | See note 1 | ||
| Mazda 12A | 10B | See note 1 | ||
| Mazda 12A | 12ONE | See note 1 | ||
| Mazda 12A | 12A Turbo | 1984-1985 1982-1989 1982-1985 | RX7 Cosmo Luce | See note 1 |
| Mazda 12A | 13A | See note 1 | ||
| Mazda 13B | 13B | See note 1 | ||
| Mazda 13B | 13B-RESI | 1984-1985 1984-1985 1984-1985 | RX7 FB Cosmo HB Luce HB | See note 1 |
| Mazda 13B | 13B-DEI | 1986-1988 1989-1991 | RX7 FC3S S4 RX7 FC3S S5 | See note 1 |
| Mazda 13B | 13B-T | 1986-1988 1989-1991 1986-1991 | RX7 FC3S S4 RX7 FC3S S5 Luce HC | See note 1 |
| Mazda 13B | Renesis 13B-MSP (standard) | 2003-2007 | 1st generation RX8 | 4-port intake system |
| Mazda 13B | Renesis 13B-MSP (high power) | 2003-2007 | 1st generation RX8 | 6-port intake system |
| Mazda 20B | 20B | See note 1 |
Note 1: All variants of this engine can be run as long as they meet the following criteria (factory or modified):
- Equipped with an engine speed reference sensor that corresponds to one of the listed engine speed modes.
- Individual coil for each spark plug.
- It is not equipped with a twin sequential turbocharger.
Known OE engines that are not suitable:
| Engine family | Engine designation | Year | Vehicle platform | Not applicable because |
|---|---|---|---|---|
| Mazda 13B | 13B-RE | 1990-1995 | Eunos Cosmo | Sequential turbocharger* |
| Mazda 13B | 13B-REW | 1992-2002 | RX7 FD | Sequential turbocharger* |
| Mazda 13B | Renesis 13B-MSP | 2008-2012 | 2nd generation RX8 | Metering oil pump** |
*The package can be used to operate this engine if a single turbocharger is installed.
**The package can be used to operate this engine if metering oil pump control is not required.
Note 1: All variants of this engine can be run as long as they meet the following criteria (factory or modified):
- Equipped with an engine speed reference sensor that corresponds to one of the listed engine speed modes.
- Individual coil for each spark plug.
- It is not equipped with a twin sequential turbocharger.
Known OE engines that are not suitable:
| Engine family | Engine designation | Year | Vehicle platform | Not applicable because |
|---|---|---|---|---|
| Mazda 13B | 13B-RE | 1990-1995 | Eunos Cosmo | Sequential turbocharger* |
| Mazda 13B | 13B-REW | 1992-2002 | RX7 FD | Sequential turbocharger* |
| Mazda 13B | Renesis 13B-MSP | 2008-2012 | 2nd generation RX8 | Metering oil pump** |
*The package can be used to operate this engine if a single turbocharger is installed.
**The package can be used to operate this engine if metering oil pump control is not required.
This package currently supports the following motor speed reference modes:
- Crankshaft One tooth missing
- Crankshaft Two teeth missing
- Multi tooth
- Mazda RX8 – Mazda Renesis 13B-MSP
Pinout Example
PINOUT – CONNECTOR A – 34 WAYS M130
Mating connector: Tyco Superseal 34 Position Keying 1 – MoTeC #65044| Pin | Designation | Full name | Description |
|---|---|---|---|
| A01 | OUT_HB2 | Half bridge exit 2 | Fuel pump |
| A02 | SEN_5V0_A1 | 5.0VA Sensor | 5V analog signal sensor |
| Answer A03 | IGN_LS1 | Low side ignition 1 | Ignition rotor 1 Main output |
| A04 | IGN_LS2 | Low Side Ignition 2 | Ignition rotor 2 Main output |
| A05 | IGN_LS3 | Low side ignition 3 | Ignition rotor 1 Drag output |
| A06 | IGN_LS4 | Low side ignition 4 | Ignition rotor drag output 2 |
| A07 | IGN_LS5 | Low side ignition 5 | |
| A08 | IGN_LS6 | Low side ignition 6 | |
| A09 | SEN_5V0_B1 | 5.0VB Sensor | 5V analog signal sensor |
| Answer 10 | BAT_NEG1 | Negative Battery | Floor |
| Answer 11 | BAT_NEG2 | Negative Battery | Floor |
| Answer 12 | IGN_LS7 | Low Side Ignition 7 | |
| Answer 13 | IGN_LS8 | Low side ignition 8 | |
| Answer 14 | AV1 | Analog voltage input 1 | Main 1 Position Servo Throttle Bank |
| Answer 15 | AV2 | Analog voltage input 2 | Throttle servo bank 1 position tracking |
| Answer 16 | AV3 | Analog voltage input 3 | Fuel pressure sensor |
| Answer 17 | AV4 | Analog voltage input 4 | Engine oil pressure |
| Answer 18 | OUT_HB1 | Half bridge exit 1 | |
| A19 | INJ_PH1 | Peak retention injector 1 | Fuel Rotor 1 Primary |
| Answer 20 | INJ_PH2 | Peak retention injector 2 | Fuel Rotor 2 Primary |
| A21 | INJ_PH3 | Peak retention injector 3 | Secondary Fuel Rotor 1 |
| ANSWER 22 | INJ_PH4 | Peak retention injector 4 | Secondary Fuel Rotor 2 |
| A23 | INJ_LS1 | Low Side Injector 1 | |
| A24 | INJ_LS2 | Low Side Injector 2 | |
| A25 | AV5 | Analog voltage input 5 | Intake manifold pressure sensor |
| A26 | BAT_POS1 | Positive Battery | ECU battery voltage |
| A27 | INJ_PH5 | Peak retention injector 5 | |
| A28 | INJ_PH6 | Peak retention injector 6 | |
| A29 | INJ_PH7 | Peak retention injector 7 | |
| Answer 30 | INJ_PH8 | Peak retention injector 8 | |
| A31 | OUT_HB3 | Half bridge exit 3 | Throttle servo bank 1 motor output |
| A32 | OUT_HB4 | Half bridge exit 4 | Throttle servo bank 1 motor output |
| A33 | OUT_HB5 | Half bridge exit 5 | |
| Answer 34 | OUT_HB6 | Half bridge exit 6 |
PINOUT – M130 CONNECTOR B – 26 WAYS
Mating connector: Tyco Superseal 26 Position Keying 1 – MoTeC # 65045| Pin | Designation | Full name | Function |
|---|---|---|---|
| B01 | UDIG1 | Universal digital input 1 | Engine speed sensor |
| B02 | UDIG2 | Universal digital input 2 | Engine timing sensor |
| B03 | AT1 | Analog temperature input 1 | Intake air temperature sensor |
| B04 | AT2 | Analog temperature input 2 | Coolant temperature sensor |
| B05 | AT3 | Analog Temperature Input 3 | Engine oil temperature sensor |
| B06 | AT4 | Analog temperature input 4 | |
| B07 | BEAT 1 | Detonation input 1 | |
| B08 | UDIG3 | Universal Digital Input 3 | Engine running switch |
| B09 | UDIG4 | Universal digital input 4 | |
| B10 | UDIG5 | Universal Digital Input 5 | |
| B11 | UDIG6 | Universal Digital Input 6 | |
| B12 | BAT_BAK | Battery Backup | |
| B13 | BEAT 2 | Detonation input 2 | |
| B14 | UDIG7 | Universal digital input 7 | |
| B15 | SEN_0V_A2 | Sensor 0V A | 0V sensor for digital signals |
| B16 | SEN_0V_B2 | Sensor 0V B | 0V sensor for digital signals |
| B17 | CAN1_HI | CAN Bus 1 High | MoTeC 1 Mbit/sec CAN |
| B18 | CAN1_LO | CAN Bus 1 Low | MoTeC 1 Mbit/sec CAN |
| B19 | SEN_6V3 | 6.3V Sensor | |
| B20 | AV6 | Analog voltage input 6 | |
| B21 | AV7 | Analog voltage input 7 | Main accelerator pedal sensor |
| B22 | AV8 | Analog voltage input 8 | Accelerator pedal sensor tracking |
| B23 | ETH_TX+ | Ethernet+ transmission | Green/White Ethernet |
| B24 | ETH_TX- | Ethernet Transmission- | Green Ethernet |
| B25 | ETH_RX+ | Ethernet+ reception | Orange/White Ethernet |
| B26 | ETH_RX- | Ethernet Reception- | Orange Ethernet |