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Stage 2.1 Update
The Rtek Stage 2.1 update is packed with features for S4 TII Rtek Stage 2 owners.
Firmware version 1.1.0 and above include:
- increase fuel adjustment to +/-37.5%
- add EGR as programmable RPM based switch output
- Expand fuel maps from 10x10 to 14x14
- add Variable Resistor as general input
- add control of the startup fuel curve
- Software ISC and Variable Resistor
- MAP based timing mode (converts timing table from LOAD vs RPM to PSI vs RPM)
- Secondary Transition Stumble Elimination
Firmware version 1.2.0 and above include all the above features, plus:
- Expand fuel maps again, now 18x14 for fuel control to 8700+ RPM
- Better interpolation between fuel cells
If you already have an Rtek7 Stage 2 ECU Upgrade for an S4 T2, you can update it to the latest Stage 2.1 firmware (ver 1.2.1) by ordering on the right. The firmware version is written on the sticker on the ECU cover.
There are two ways to order your update.
- Self install: $10
We send you a new EPROM chip. You have to be competent in removing and installing the chip from the ECU.
- DTI Install: $15
Send us your ECU and we will install the chip for you.
Whats involved in the chip swap:
The chip is already socketed so there is no soldering involved. You just need to remove the old one and insert the new one (with the same orientation!).
FAILURE TO INSTALL THE CHIP PROPERLY WILL DAMAGE CHIP BEYOND REPAIR.
Here is an instructional video on how to swap the chip for a Stage 1.x ECU. Stage 2 ECUs are slightly different inside but the procedure is the same.
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Shipping
If you choose the DTI Install option, t is your responsibility to ship the chip or ECU to us. When you purchase an update from this page, you are paying for shipping from us to you for either the chip or the ECU return. You are responsible for the cost of shipping the chip or ECU to us. It is highly recommended that you ship the chip/ ECU using a method that is trackable. We are not responsible for lost chips or ECUs.
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