It didnt beep for me. it beeped once as it shut off, did the alarm locking BEEP BEEP that it does (03 sti). Recently it wouldn't allow me to prime my fuel pump and now it refuses to recognize when I try to de immobilize it to drive. Its in at subaru getting looked over.

CYCLOPS alarm for the win, had it on my silvia and have it on the missus wrx, its also going onto my Rx7. Fucking WAAAAY better alarm. But I guess its all personal opinion and theft experience.