UPDATE: E90POST MEMBER ATTEMPTS ARMA SUPERCHARGER!
So I got an email from Ben regarding the ARMA supercharger for our N52 2.5L.
They have produced a working supercharger kit for the N52 323i 2.5L.
This is Arma Supercharger. We just release E9x 323 325 328 330i SC system.
I will attaché some pictures for your reference. I will also send the dyno test to you.
Our test car is 323i. The stock hp is 178i after install our SC is 291. It raise 60%.
Let me know if you are interested it.
Here are the attachments I got on my email. Looks promising, what do you guys think?!
I'm going to inquire about the pricing!
Update 2: Official update on ARMA's website too!
Stage 2 Kit:
Supercharger, mounting brackets, idler pulleys and accessory drive belt, high-flow air filter, supercharger inlet duct, hardware accessories, Fuel Management Computer (FMC), fuel injectors, by pass valve, intercooler.
This system is exclusively added the ARMA-developed STAGE-2 mechanical supercharging system. The horsepower testing shows that the N52 323 2.5 engine’s torque can reach to the level at 313PHP 370 NM, and the 325 2.5 can drive to the torque at 350HP 410NM, moreover, the 330s are even comparable to the torque of V8M3 at 425HP 510NM. The Front Mount Air-to-Air Intercooler, exclusive computer and ARMA Exhaust are the indispensables to push the 3-series to the ultimate. To equip the full kit of ARMA Mechanical Supercharging System is the best buy for the 3-series owners.