Originally Posted by Ricky Bobby

Prestige BMW in Ramsey NJ is also a Dinan authorized dealer.

I've said it once and I've said it again, not sure what you are tuning but if its the M54, the Jim Conforti Shark Injector is a more aggressive tune than Dinan. The Dinan tune is $100 less but you have to have it flashed at a dealer and pay an hour's worth of labor for it. as well.