[QiPower]

Have been using one car for the track, but decided it would be a blast to turn my low-mileage ex-company car (E90) in to a stealthy street car that's even more fun. On the docket: Cobb Tuning Access Port, aFe Intake Kit with Pro5R Filters, Active Autowerke Blow Off Valve Kit (to help the turbos handle the additional power without damage) and a Biltsteing/H&R Sports Suspension.

I've looked at exhausts, but I don't see anything that add enough bhp and still keeps this car stealthy and under the radar (literally and figuratively). I also have my state-of-the-art radar, laser, laser jamming countermeasure in place.

Am I missing anything given my goals. I'm motivated, but new to this site and far from an expert.

Thanks for any advice you can provide!