Yes, its hard to steal a Bimmer. The car double locks which shuts off the fuel flow and won't allow the car to start. Dinan is a good chip that retains factory warranty and yeild a moderate increase in power. JC chips yeild the most power, but void the warranty. I don't think you would care about warranty though...
<span style='color:gray'><span style='font-family:Courier'>1995 e36 3 Series RIP
1999 e46 3 Series BURN IN HELL
2000 MR-S Roadster= Current</span></span>