In this latest tune and dyno test, we take this 2018 Audi S4 and custom tune it, adjusting the software and fine tuning the results from the rolling road dyno testing. Along with this, we also update the gearbox mapping, to really maximise every part of the rev range. The result… Some pretty impressive performance gains!!
Firstly, we take the S4 with completely stock mapping. We get it strapped up on to the rollers, and take it for the first set of tests to establish what the factory mapping is producing. You can see the stock dyno graph below. You can see that power and torque are both running pretty spot on to what the manufacturer quote, showing 354hp and 543Nm of torque. These are dialled in, so we know exactly what base we’re working from.
Once we are happy that we have everything logged and the stock figures entered, it’s time to connect to the ECU. We use our Autotuner system to connect directly on to the ECU. The process of this custom tune is very much a hands-on, ‘fine tweaking’ procedure. We make several alterations to the software, adjusting the exact parameters we need and configure the software files to give us that increased power and torque.
Once we are happy with our alterations, we take it for further dyno testing, allowing us to monitor the engine responses in real time, data logging the entirety of the test. Once the first few tuned runs are complete, the data is analysed and conclusions can be made as to where further adjustments and alterations can be made. Again, we configure this directly within the ECU, changing the exact parameters which are necessary to reach the requirements.
After these adjustments, there are further tests and it’s once again taken for more tuned runs. The data is logged and gains are recorded. This process is repeated several times, as we will constantly analyse and fine tune, right down to the final requirements, until we are happy that we are getting the very best results from this remap.
The final tuned dyno run can be seen at point 0:35 on the video below, where we have finally finished altering everything, giving us the complete results. Dyno testing before and after shows healthy gains across the rev range, with a significant increase in power and torque, really transforming how it feels to drive.
Peak power was increased significantly. We were able to lift it from 354hp at stock, up to 408hp after the custom tune. Taking a look at the tuned dyno graph below you can see how the curve changes (dotted red and blue lines), bringing that power in right down from those lower revs, and showing improvements across the whole rev range. We give real consistency here, really opening up that mid-section, right up to that top end where we provide that additional +54hp at its peak, really transforming how it feels out on the road.
Torque also saw huge improvements. At stock the engine produced 543Nm, and now 640Nm after the remap. Again, taking a look at the graph (solid lines), you can really see the difference in that curve. You can really see that consistency, where we hold those gains across the entire rev range, delivering those increases exactly where it’s needed, adding that +97Nm at its peak.
Check out the full dyno test here:
For more information on tuning for your Audi, please visit: https://bluesparkautomotive.com/audi-tuning
Visit our dedicated page for more details on our remapping services: https://bluesparkautomotive.com/products/remaps
The remap service featured in this dyno test can be found here:
