SXX-EVO Programs
High duration camshaft packages for naturally aspirated BMW M cars.
Our intentions
Reaching the zenith of natural aspiration: over 125hp/liters.
In 2023, I set out to empirically prove, or disprove an hypothesis: could we reach 125hp/liters with stock displacements S54, S65 and S85 engines on pump fuel?
The underlying objective is to achieve N/A performance levels usually reserved to stroker motors for 1/4th of the cost.
To achieve this, I started from the baseline of standard bolt-on upgrades and dove into the world of high duration camshafts, uprated valvetrains and final drive upgrades.
Enjoy,
- Matt
We had one way to go: higher.
Without a bore and stroke increase, we needed to find power at higher revs.
S85-EVO: 522whp at 8,420 RPM
[...] on a mustang dyno.
S65-EVO: over 400whp.
[...] more will be achieved once DCT limiters are tuned for higher revs.
S54-EVO: TBD
Coming soon.
Program highlights
Complete turnkey solution.
The SXX-EVO Program is based on a cylinder head core exchange service to provide limited downtime, and reduce installation related risks.
The heads are machined, refreshed and upgraded with the components required for the Sxx-EVO.
The kit is delivered with the required hardware to install the cylinder heads, and includes tuning specific to your configuration.
Complementary upgrade
Final drive ratio upgrades.
The increase in revs allows the usage of higher final drive ratios, improving power to the wheels through increased torque multiplication.
Using BMW Motorsport gears, we increase torque to the wheels, improving acceleration while retaining similar top speeds to the original configurations.
