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JHM ECU Tuning - B8-RS5 4.2L FSI Stage 1

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JHM ECU Tuning - B8-RS5 4.2L FSI Stage 1

Introducing JHM Tuning for the B8-RS5 with the 32v 4.2l FSI V8!!!

Please note that your vehicle must be present at one of our shops in order to install this software if you do not have a JHM Power Connect Cable. Please contact us if you are interested in setting up an appointment.

JHM have specialized in tuning naturally aspirated (NA) or "all motor" 4.2L V8 engines since we started tuning the B6-S4 in 2008. Ever since then we have been the number one company when it comes to Audi V8 performance. Like our success with the B6-B7 S4, B7 RS4, and B8-S5 4.2L has shown, our software has been proven time and time again to deliver real world performance. That continues with our tuning for the B8-RS5 4.2L FSI V8. We purchased our in-house B8-RS5 4.2L in mid-2017 and immediately began developing software. After countless revisions and putting the vehicle through our rigorous R&D process, we are happy to now offer the ultimate performance software for your B8-RS5 4.2L FSI V8!

Why is JHM tuning the BEST? Their Stage 1 performance software is specifically designed to maximize the engine power output capabilities with stock transmission software. Following their success with the B7-RS4 and B8-S5 4.2L FSI Performance Software, JHM began extensive research and testing with our in house B8-RS5 4.2L. JHM's tuning will give your RS5 improved throttle response and more power throughout the entire RPM range leading to faster acceleration and a much more rewarding and refined driving dynamic.


JHM's preliminary testing has shown exceptional results of 11.9@114mph on 91 Octane!

Additional Benefits:

In addition to optimal performance, our JHM Stage 1 Performance Software significantly improves the RS5s EGT (Exhaust Gas Temperature). This is beneficial because lower EGTs will improve catalyst life, and better engine protection for long periods of hard use for Road Racing, Autocross, Etc..

Recommended Supporting Modifications:

  • High flow downpipes and cat-back exhaust


  • 2010-2017 Audi B8, B8.5 RS5
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