BMW 320d chiptuning results - before and after comparison

Just finished chiptuning my 2020 G20 320d (B47 engine, 190hp stock). Wanted to share detailed before and after results for anyone considering a remap on this engine.

Stock numbers (measured on Maha roller dyno):

• 185hp at wheels (slightly below BMW spec, normal)
• 385nm torque

After stage 1 ECU remap:

• 238hp at wheels
• 462nm torque

Thats a gain of 53hp and 77nm from just a software change. No hardware modifications needed.

Real world differences I noticed:

• 0-100 km/h feels about 1.5 seconds faster
• Highway overtaking is effortless now, 80-120 km/h in 6th gear is where the biggest improvement is
• Fuel consumption stayed the same in normal driving (5.2L/100km highway)
• Turbo spools slightly earlier, more responsive below 2000rpm

The tune was done remotely - I received an OBD tool, read the ECU file, sent it to the tuner, and flashed the modified file back. Whole process took about 2 hours.

Anyone else running a tuned B47? What numbers are you seeing?