The Audi S3, renowned for its performance, can be further enhanced through subtle tweaks using VCDS (VAG-COM Diagnostic System). One popular modification aims to increase traction, particularly beneficial for track days and spirited driving. This article delves into the intricacies of adjusting the Haldex system via VCDS to achieve “Increased Traction” mode in an Audi S3. We’ll explore user experiences and discuss potential variations between different Audi models.
Comparing AWD Settings Across Audi Models: Golf R vs. S3 vs. 7.5R
Several online forums discuss perceived traction differences between the Audi S3, Golf R, and the facelifted 7.5R. A common belief suggests that factory settings in the AWD module might contribute to these variations. However, a comparison of a 2014 Golf 7R and a 2014 Audi S3 8V revealed identical settings in module 22 (AWD) – both set to “Standard.” Further investigation into XDS (Electronic Differential Lock) settings also showed no discrepancies, with both cars configured to “Standard.”
Surprisingly, even a newer 7.5R Facelift model exhibited the same “Standard” settings for both the AWD and XDS modules. This consistency across models raises questions about the source of anecdotal traction differences.
Modifying AWD and XDS Settings for Increased Traction
Despite the identical factory settings, experimentation with VCDS modifications continued. Both the 2014 Golf 7R and the 2014 S3 underwent changes in module 22: AWD was switched to “Increased Traction” and XDS to “Medium.” While track testing hasn’t yet confirmed performance improvements, an interesting observation emerged. Subsequent VCDS scans a week later revealed that the XDS setting had reverted to “Standard” on the S3. This raises questions about the permanence of XDS adjustments and whether specific procedures are necessary to retain the modified settings.
7.5R Experience with Increased Traction: Oversteer Surprise
In contrast, the 7.5R owner reported a significant change in handling after applying the “Increased Traction” setting to the Haldex system. The driver experienced a noticeable increase in oversteer, particularly pronounced in roundabouts, describing the change as dramatic and almost leading to loss of control. This suggests that while the underlying settings might appear identical across models, the actual Haldex behavior can vary based on factors like software versions and hardware revisions.
7.5R Module Information for Comparison
To facilitate further investigation, the following module information from the 7.5R is provided:
- Address 22: AWD (J492)
- Labels: 0CQ-907-554.clb
- Part No SW: 0CQ 907 554 H
- HW: 0CQ 525 130
- Component: Haldex4Motion H52 7083
This data allows for comparisons with other models and potentially sheds light on the variations in Haldex responses to VCDS adjustments.
Conclusion: The Quest for Enhanced Traction Continues
While initial findings suggest that factory AWD and XDS settings might be consistent across several Audi models, user experiences indicate that modifying these settings through VCDS can lead to noticeable changes in handling. The reversion of XDS settings in the S3 and the surprising oversteer in the 7.5R highlight the complexity of the Haldex system and the need for careful experimentation and further investigation. Future track testing and data analysis will be crucial in determining the true impact of “Increased Traction” modifications on the Audi S3’s performance.
