[siscobmw]

there's a lot of filter that works better than BMW stuff,You can put it on but:
say goodbye to your warranty
don't expect more than 2-3 bhp
cone filters must be placed in order to suck fresh air(so put it far from exhaust manifold or near the engine bloick), or you will lose bhp.....

air filters alone worth nothing, even with velvetronic engines...twin scroll turbo engines have a marginal gain and a remap firstly is better(35i can go at 360 bhp with no fuss at all and still retaining their original filters!)

so: are you sure that 50$/GBP/euros filters worth something more than standard ones?

I suggest you to keep your warranty as it is now, then the usual filter-exhaust-remap procedure to get more bhp....dont expect however big improvements....


Francesco