In our latest dyno test we have this 2021 G20 BMW 320i in for tuning and testing. We’ve already conducted extensive development on these, so already know what the 2.0 B48 is capable of. The 320i is detuned from the factory, but with a sensible safe tune, we can get similar figures to that of a stock 330i. After quick installation of our 3 Channel Pro Petrol chip tuning box, it was up on the rollers to see what the engine could achieve.
Now as you’ll have seen in some of our recent videos, the recurring issue that all 2021+ BMW drivers are facing, is the tuning limitations due to the locked ECU. This 2021 G20 3 Series is no different and currently has no way to read or write the ECU data. This means that while traditional remapping is impossible, our tuning module offers the perfect solution here, providing fantastic gains without requiring a traditional ECU flash. This also has the added benefit of being traceless once removed for warranty purposes.
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 significantly increased, as we were able to lift it from 187hp at stock, up to 256hp with the box. If you take a look at the dyno graph below you can see how we change that curve (dotted red and blue lines). We give real consistency here, bringing that extra power in as soon as possible, whilst holding it for as long as possible throughout the entire rev range, adding that +69hp at its peak, really transforming how it feels out on the road.
Torque also saw some impressive improvements. At stock the engine produced 320Nm and now 438Nm with the box. If you take another look at the graph (solid lines), you can really see where we have applied those gains. Again looking across that whole portion of the mid-range, you can really see exactly where its lifted, adding the +118Nm extra at its peak, delivering that increase exactly where it’s needed.
Check out the full dyno test here:
For more information on tuning for your BMW, please visit: https://bluesparkautomotive.com/bmw-tuning
Check out our recent blog post, where we cover the ins and outs of locked ECUs: https://bluesparkautomotive.com/blog/BMW-tuning-and-unlock-FEMTO
For more information on our rolling road dyno services, please visit: https://bluesparkautomotive.com/info-faq/rolling-road-dyno-tuning
The chip tuning box featured in this blog can be found here:
