Just found out that my S doesn't have a factory alarm.
There are alot of alarm systems selling on ebay, anyone know if they are any good?

Is aftermarket alarm system really necessary? I mean if a pro wants to steal ur car, it will be gone in 60 sec. I don't have anything valuable inside my car, everything stock~ should i get an alarm?

also, ppl dun care about alarm when they hear it since there r so many false alarm around.