BMW 420d B47 Tuning

Written By Nate Howells

2015 BMW 420d running our PE Stage 1 Remap

When this 420d was originally booked in it we diagnosed a fault which reduced the power considerably under OEM spec.

Once the fault was rectified the lost performance was restored so we could tune the engine, shows how vital it is to making sure the motor is in good order before tuning.

Stock w/ fault - 157bhp & 370nm
Stock w/ fault rectified - 171bhp & 381nm
PE Stage 1 - 221bhp & 505nm

Delta gains of 50bhp & 124nm awesome improvements from just our software alone

Get in touch for info on your vehicle

Nate Howells https://www.performance-engineeringltd.co.uk
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