BMW M340d xDrive MHEV 3.0 B57 335bhp/340ps Dyno Test - Bluespark Tuning Box

The chip tuning box featured in this dyno test can be found here: bluesparkautom...
In our latest dyno test we had this awesome 2023 G21 BMW M340d Touring in for tuning and testing. After quick installation of our specifically designed Pro + Boost SENT chip tuning box, it was up on the rollers to see what the engine could achieve.
These vehicles currently have a locked ECU with no way to read or write the ECU data. This means that while traditional remapping is impossible, our tuning box can give owners the opportunity to make fantastic gains without requiring a traditional ECU flash. This 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 the M340d feels to drive.
Peak power was significantly increased, as we were able to lift it from 331hp at stock, up to 405hp with the box. If you take a look at the dyno graph here 0:48 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 rev range. Pay attention to the whole of that mid-section, where you can really see that noticeable difference, whilst adding that +74hp at its peak, really transforming how it feels out on the road.
Torque also saw some really impressive improvements. At stock the engine produced 705Nm and now 820Nm 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 +115Nm extra at its peak, delivering that increase exactly where it’s needed.
For more information on tuning for your BMW, please visit: bluesparkautom...
For more information on SENT technology, please see: bluesparkautom...
For more information on our rolling road dyno services, please visit: bluesparkautom...

[@DavidBelser]

I bet that thing moves for a Diesel.

[@BluesparkAutomotive]

It absolutely does. Its a genuinely fast car full stop.