Syvecs LTD Porsche 997 AWD Controller Owner’s Manual
- June 9, 2024
- Syvecs LTD
Table of Contents
Syvecs LTD Porsche 997 AWD Controller
Installation
- First you need to locate the OEM AWD Ecu on the 997, this is found in rear section of the car
- To access, you need to pull the rear seats forward, remove the subwoofer and then lift the carpet up
- A detailed guide for doing this can be found here – 997 Ecu Access
Once the carpet is lifted, remove the left ecu holde rer and you will find the
OEM AWD Ecu on top of the OEMM Engine Ecu, remove.
Unplug and remove OEM Controller, replace with t hthe Syvecs 997 AWD Unit in
its place by securing with doouuble sided tape or Ties 
When mounting the Syvecs AWD Ecu it’s best to p plulug in the USB Cable at the same time and route the cabl lee into the front if you are planning to do live communication with the Unit. T hThe USB port is found by removing the Hex plug on the frroont of the unit.
The AWD Unit will come pre loaded with a base cala ilibration that has default values which simulate an OEM AAWD unit. Use Syvecs Scal software to adjust. See last Page
Controls
FWD Drive Mode / Burn-Out
-
First method is via activating the Handbrake This will bring on a 4wd light on the dash to illustrate that FWD Drive mode is Active. To switch it back to AWD just turn off the handbrake.
4WD light warning in Burnout Mode is optional and can be turned ON or OFF in Scal software. SCAL – Two Wheel Drive Control – Awd Light Active in Burnout -
The second Option is via wiring in a Burnout Switch to AN01 Input on the Syvecs Awd controller. AN01 has a internal 5v pull-up set so the input will sit at 5v, the other side of the Switch needs to be connected to Ground on the chassis or via Ground Pins on the Syvecs AWD Controller.
- AN01, AN02, 5V and Ground are available on the External 4 way DTM connector
- When AN01 is less than 3v it will activate 2WD Mode / Burnout Mode.
- Live Adjustment Potentiometer
Users can have the ability to adjust the AWD Duty live via a laptop or with a
external potentiometer with the Syvecs AWD Unit. A 20K Rotary Potentiometer
can be wired to the AN2 input of the Syvecs Controller and it will apply a
multiplier to the Duty. Wiring for the Pot is here — >
- 0 -1 = No Adjustment (Logic Off)
- 1 -2 = 0.6 Multiplier (Less Duty)
- 5 -6 = 1.0 Multiplier (No Adjustment)
- 6 -7 = 1.1 Multiplier
- 7 -8 = 1.2 Multiplier
- 8 -9 = 1.3 Multiplier
- 9-10 = 1.4 Multiplier (More Duty)
External DTM4 Pinout
DTM4
- Pin 1 – Ground (Black)
- Pin 2 – AN2 (Blue) – AWD 20k Pot
- Pin 3 – 5v Out (Red)
- Pin 4 – AN01 (Yellow) – Burnout Switch
- Burnout Switch – ON = AWD / OFF = 2WD
Calibrations of the AWD ECU
Users have the ability to adjust all the controls of the Syvecs AWD Unit via our Scal program that’s part of SSuite. This can be downloaded f https://www.syvecs.com/software/
- The USB port for communication is found under the main connector which is protected with a Allen key plug. Remove the plug and connect a Micro USB Cable to the
- AWD Unit and the other side to a Windows Laptop or PC.
- Open the Scal software and select Device – Connect Tab at the top. This will connect to the device and grab the calibration from it. If the unit has just been updated then no Cal will be present and Users need to program defaults or load a base map.
IMPORTANT
- The AWD Ecu can be connected to and programmed outside of the car as it will power up of the USB cable alone. PLEASE NOTE: If you are connecting the Usb to an
- Awd Ecu before the Unit is powered up from the car power systems it will enter a bootloader state until a Device –Connect is preformed. If wanting to connect to the unit in the car then connect the USB after the Ignition is ON or perform a Device –Connect first to bring the unit into main code.
- Green Maps can be changed live, Blue maps require a Device – Program for the calibration change to be flashed into the device.
- When all calibration work is done, users must do a Device – Program so the green maps which have been changed get flashed and stored in memory.
Main Code Updates
Please watch the help video here – https://www.youtube.com/watch?v=RuXkm_9gBRU Youtube – SyvecsHelp – Syvecs AWD Firmware Update Guide
Calibration Switching on the AWD ECU
- The Syvecs AWD Unit allows for users to be able to adjust many aspects of the control strategies inside the AWD Ecu via either an external switch or via OEM controls / buttons with plug in AWD units.
- At the top of the Scal AWD Calibration tree you will find the Calibration Switch section which list all the maps that can be adjusted based on awdSelect position. There is 4 positions available which can be used to adjust multiple duty maps or if limp modes are active.
- Users are able to see the active awdSelect position by viewing it via the right item list. Double clicking on the item will bring up a larger gauge.
The 997 AWD unit sets the awdSelect position based on the follow OEM Modes:
- Normal Mode – awdSelect = 1
- Sport Mode – awdSelect = 2
This document is intended for use by a technical audience and describes several potentially hazardous procedures. Installations should be carried out by competent persons only.
Syvecs and the author accept no liability for any damage caused by the
incorrect installation or configuration of the equipment.
Please Note that due to frequent firmware changes certain windows might not be
the same as the manual illustrates. If so please contact the Syvecs Tech Team
for Assistance.
[email protected]