i like my GReddy turbo timer, compliments my profecB2 quite nicely, and has other features a car alarm doesn't have...

.......... or the GReddy Full Auto Timer can use it’s two auto timer modes (A-L, A-H). The modes estimate the driving RPM according to the vehicle's alternator signal and then recommend a count down time. A stopwatch/lap time and attack modes along with a built in voltmeter and speedometer are also standard features. Safety options for the parking brake and speedo hook-ups can be used to disengage operation if vehicle is attempted to be moved without the key.