well, you have to look at what makes an alarm good, basically nothing, the best are the loud uniqe ones that go off with pressure. but if you REALLY wanted to, even though I think its a waste, just pull the fuse(make sure its the right 1)
When they installed my Viper 550 they left the factory alarm active. It turns on and off with my Viper remote. It's good to have that extra security. This way if i hear my horn honking too, i know i had better get out there fast.