[BLK235iNJ]

I'm in the middle of researching and pricing exhaust for my car. I notice that the axle backs are pretty expensive and performance is pretty much null. I spoke to a reputable BMW Tuner Shop and they recommended a DP, highflow cat, resonator and muffler delete.

What do you think? I admit I'm a noob to the bmw scene so if I got the config wrong just recommend what I should be looking at.

Thanks