AMS db's ?
 

I currently have the HKS Hi-power with a helix DP and test pipe and am thinking about going with either a megan catback or ams to get the full 3" and was just wondering how much louder each of them would be than the HKS.... :beer:

The HKS has slight tapers, so AMS/Megan will be a bit louder, but I think the AMS will be louder than the megan.

Sound clips/DB readings vary greatly on where they are marked, windows up down, rpms, etc., so just get a ride with somebody local.