BMW indy shop in Frederick, MD

[mherbert]

Hi,
I'm looking for recommendations for an indy shop in Frederick MD, where I work. I have a 2003 e39 540i/6 M-Sport and having some rough idle/ throttle by wire /MAF sensor codes that I clear, but come back on again every 500 -800 miles ( drive about 80-100 miles per day RT for commute from Chambersburg PA where I live). Let me know anyone you may recommend.

thanks
Mike Herbert

[UncleQuillis]

Premier Autowerks - 5811 Grove Lane Frederick, MD 21704 - 240-651-0024
Auto Clinic International - 1820 Rosemont Avenue Frederick, MD 21702 - 301-644-4244
Deutsch American - 9401 Ball Road Ijamsville, MD 21754 - 301-696-1314

[M50_328is]

FWIW - I no longer deal with or recommend Deutsche. Less professional and knowledgeable staff than in the past.

-Phil