BMG Racing

13/03/2026

SHE’S ALIVE!
After months of blood, sweat, and late nights, the BMG heart is finally beating. There’s nothing like that first roar to make all the hard work worth it.
Since the last update, we’ve:
- Custom-ducted the oil cooler for better cooling.
- Fabricated the cold air intake.
Tackled the mountain of wires to get the ECUMaster EMU Black integrated and talking.

A massive shoutout to Gebert Speed Shop for the incredible expertise and help getting this over the finish line. We couldn’t have done it without you.
Now, it’s time to fine-tune and get her on the tarmac. 🏎️💨
RaceCarBuild EngineBuild TrackReady

02/03/2026

We’ve been cooking behind the scenes.
Motor is in and sitting exactly where it should, like it never left. Front end hardware back on, torqued, and looking the part.
Custom brackets done for the E46 poly anti-roll bars, no more sponge cake rubber anywhere, everything is poly or better now.

Fabbed a proper support for the dipstick tube and built a fresh M50 manifold bracket so nothing is hanging on hope and cable ties.
Next phase, we dive into the interior and start the electrical work. That’s where the real gremlins live.

#ʙᴜɪʟᴛɴᴏᴛʙᴏᴜɢʜᴛ

26/02/2026

Out with the old, in with the rebuilt.
The past few weeks have been spent in the workshop rather than on the timeline. The old motor is out and the new one is fully assembled and ready to go. Fresh valve stem seals, valves lapped, and a mild clean-up on the intake and exhaust ports. Nothing wild, just solid fundamentals done properly.
The engine bay got some attention while we were there, including an electric power steering conversion to take a bit of load off the crank and tidy things up.
Next up is dropping the new motor in and finishing the updated engine harness.

07/12/2025

Wrapped up the year at Zwartkops Trax Day, sending the M50B25 out for its final run. One more clean, reliable session before the big December projects kick off. This was the last dance before the rebuild work starts and the platform gets prepped for next season’s push.

Closing the chapter on a trusted motor, opening the door to a stronger 2026.

04/12/2025

Took the car back to Auto Pro Fitment Centre to rework and enlarge the front section of the exhaust so it clears the Z3 front X-brace. Still running the trusty M50B25 for now, but I’m building the platform with the M54B30 swap in mind. More room to breathe up front and a stiffer subframe layout to stay planted when the corner speeds get wild.

Future-proofing the build while tightening up the chassis package, one upgrade at a time.

19/09/2025

✅ Dyno Day Results Are In! ✅

We finally have a solid baseline to work from, and the car handled beautifully throughout the pulls. It’s great to finally know what this stock 325 motor can put down! 💪

The numbers came in right where I expected—reliable, consistent, and giving us the perfect platform to build on. Next step: take it to the track and see how these results translate to real-world performance. 🏁

Big shoutout to Muller Developments for the use of their facility 🙌 and to Gebert Speed Shop for their support with the ECU wiring, baseline setup, and helping us reach these stable numbers. 🔧⚡

Onward and upward! 🚀

19/09/2025

🔥 Dyno Day Vibes! 🔥

The wait is over—time to see what this motor is really made of! 💪

ECU Masters EMU Black fully dialed in

Watching every drop: Oil Temp, Oil Pressure, Fuel Pressure

Rocking the 330i DBW throttle body for that instant punch

Let’s light up the rollers and hear this beast roar! 🚀

Thanks to and Braam for his facility!

24/06/2025

19/06/2025

🧠💥 Brain Transplant Complete!
We just swapped out the stock ECU for the mighty ECU Master EMU Black – because stock brains just couldn’t keep up with this madness. 🏎️⚡

Shoutout to Gebert Speed Shop for the wizardry and late-night garage laughs.
She’s smarter, faster, and angrier now. Stay tuned... 🔧💻🔥

05/06/2025