First of all, congrats on your new ultimate driving machine. The 335is already comes with more power than the standard 335i models. Adding the Cobb, intake, and fmic will allow you to run the stage 1+ tune which will give you a slight boost in performance gains.

335is gains:
Stage1 Gains Aggressive (93 octane): 8%HP / 6%TQ
Stage2+FMIC Gains: Aggressive (93 octane): 31%HP / 21%TQ

Stage 1+ will be in bteween those two ranges in terms of gains. I'd recommend that you check out the following mods:

Cobb AccessPORT
aFe stage 2 intake
Evolution Racewerks FMIC

I'll shoot you over a pm with more details!

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