Here are the Specs on a stock 330i with the Steptronic
Road and Tracked clocked one 0-60 at 6.5, and 15.0 @ 94.0 for the 1/4
Given they are damn good drivers...Id say 15.4 for a tuned 330i isn't bad at all...
Just swap your engine for a 335i's, get a Vishnu V2 ECU, then youll be able to rock...
323iT 5MT ZSP/ M54B30 Manifold Swap/ F1 Headers + Full ZHP Exhaust/ UUC SSK + DSSR/ CF ACS Mirrors/ M3 Steering Wheel + ZHP Shift Knob