Hello everyone, we’re back to showcase the results we achieved tuning our 2023 BMW G87 M2! We’re beginning with a Stage 1 remap to show what can be achieved with little/no hardware upgrades.
It’s important to note that the car was running some supporting mods
R44 200 Cell downpipes
Eventuri intake - (Matte)
OPF-back exhaust from
Grail
Which certainly helped although the stock airbox is actually really good on these G8X S58 vehicles - an intake isn’t necessary to make very good power.
The Results
*All figures below represent power at the crank, accounting for a 15% drivetrain loss.
Stock - 478 bhp & 534 Nm (394 lb-ft) torque
BMW claims OEM power output to be 474 bhp & 550 Nm (405 lb-ft) torque. Torque figures sitting slightly lower than expected but this could be down to the conditions on the day or the drivetrain loss conversion.
We have previously tested the car’s standard power with the OEM intake, Ramair intake and Eventuri intake - all producing very similar stock power figures.
Stage 1 - 674 bhp & 775 Nm (571 lb-ft) torque
A 200 horsepower and 240 Nm torque gain at the crank with just a Stage 1 tune is a crazy increase and just goes to show how capable these cars are from factory. Remember, our M2 has OPF filters (mandatory for the UK/EU markets due to emissions) which are highly restrictive. US cars don’t have this problem so may see even higher gains.
TAKE A WATCH
In order to tune the S58 engine, we had to send our G87’s ECU over to
Femto to be unlocked. We then re-installed the ECU and took the car up to
Tom Wrigley Performance to be mapped by him and
Mike Ball - the tuners behind our 1,000bhp G80 M3.
Learn more about our M3 here :
The map went through a number of revisions, being tested on both the dyno and on the road to ensure everything was perfect. This is the process we follow for all customer cars that choose to tune their S58-powered BMWs through ourselves and
Tom Wrigley Performance here in the UK.
Please feel free to share any of your own results, it would be cool to compare the figures lots of you guys are seeing, especially over in the US.