The F12 and F13 650i with the Valvetronic N63 make 449hp and 650Nm as standard. Our Stage 1 calibration takes the 4.4 litre twin-turbo V8 to around 540hp and 780Nm from software alone, programmed through the OBD port with the original file kept for a return to standard. The gain is large because the N63 runs well within itself from the factory; every car is baselined and proven on our dyno.
Measured on our Mustang AWD rolling road in Maidstone. Wheel figures, drivetrain loss added for the flywheel numbers.Now this is a good looking car; the red paintwork is stunning on this 2012 BMW 650i. This German V8 is a great engine that we love to tune, with some already impressive stock figures that we can make even higher with just a stage 1 tune. Even without additional hardware, we managed to produce some impressive horsepower and torque increases. We offer this BMW 650i tuning package at JF Automotive or through our dealer network.
Check out this review by Autocar of the F12/13 6-series.
BMW 650i F13 Stock Results
BMW claim the car only makes 450BHP and 650Nm torque at the crank, yet after a run on the dyno, we revealed that it was actually making 480BHP and 680Nm torque. Inflated figures such as these can be expected from most German car manufacturers as each engine comes out of the factory with a different power figure.
How Do We Know The Power?
We record all power figures on our Mustang 2000BHP AWD linked dyno. This piece of kit measures wheel horsepower and torque. Factory estimated power figures are measured at the crank, and do not account for drivetrain percentage loss. For this reason, we apply our estimated drivetrain percentage loss to the wheel horsepower figures from our dyno to give us flywheel power.
Don’t worry your car will still get the figures we quote online, but the dyno readout always shows wheel horsepower.
BMW 650i Tuning Outcome
After a fair few runs, the car managed to make an astounding 555BHP and 800Nm torque. As a result, that’s 100BHP over claimed figure from BMW! This is the reason why we think the F12/13 650i is an amazing car to tune.
If you have a 650i and want to find out more, give us a call and we’ll happily answer any questions.
Photos from the build
6 photos of this BMW in our Maidstone workshop. Tap any to enlarge.
Questions we get asked
Which 650i is this? There are two versions.
This is the later 449hp Valvetronic N63 fitted from 2012. The earlier 407hp 650i uses the first N63 and tunes to around 470hp and 700Nm. Tell us the year and we will confirm which you have.
Does a 650i remap need any hardware?
No. Stage 1 is software only. The N63 has strong internals and the standard turbos and cooling cope with this level; we would only look at hardware if you wanted to go further.
Can the automatic gearbox be tuned?
Yes. The ZF eight-speed responds well to a gearbox calibration, with faster shifts, sharper kickdown and torque limits raised to suit the engine tune.
