Custom hybrid turbos for N54/N55/B58
The key with meth injection on N55 is the nozzle placement. Mount it after the intercooler, before the throttle body. Use a 175ml/min nozzle for stage 2 power levels. And always ru...
2 months ago
I made 495hp on my M340i with stock turbos on E40 blend. Mods: VRSF catless DP, VRSF 7.5 FMIC, BM3 stage 2 map, upgraded charge pipe, and a port injection kit for the ethanol. The ...
Classic boost leak symptoms on N55: loss of power under boost, hissing sound from the engine bay, and boost not reaching target (check with MHD or BM3 data logging). The most commo...
For a daily driver with occasional track use, the Pure Stage 2 turbo is the sweet spot. It bolts onto the stock manifold, uses the stock oil and coolant lines, and makes around 480...
Interested in the turbo. What mileage is on it and is it the original or a replacement? Also interested in the HPFP if you have it. Located in Germany so shipping shouldnt be an is...
Wagner Tuning EVO2 is the gold standard for N55 intercoolers. Massive core, great fitment, and it drops intake temps by 20-30C compared to stock. Its not cheap at around 800 EUR bu...
The N54 is legendary for a reason. Ive built several N54s to 500hp+ on stock internals. The weak point at that level is the wastegates - they start to rattle and lose boost control...
3 months ago
ARP head studs and Cometic gasket are a must at 600hp — good call including those. The stock head bolts are torque-to-yield and cannot be reused after removal anyway. Make sure you...
lol at the DPF improving fuel economy. mine was the same - the clogged DPF was killing performance and economy. after delete it was like a new car
For 30k km/year, go diesel. The fuel savings will be significant. 320d with a tune is plenty fast and youll save thousands on fuel over the years.
4 months ago
TempaDrive does good work. Used them for my 520d and the tune is smooth and reliable. Good to see more people having positive experiences.
That M340i number is impressive! 445hp from a stock turbo B58 is near the limit. What fuel were you running?
the F80 M3 is already a modern classic. the S55 engine, the looks, the driving experience - its peak M car. buy one before prices go back up
i change every 7500 km. call me paranoid but oil is cheap, engines are not. my E90 has 250k km and runs perfectly
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Mar 11, 2026
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