[CREWZIN]

I think they are all about the same loudness. I've heard quite a few. A lot depends on where you mount it. Right up front in the grill will be loudest. Mine is under the aftermarket air-filter...not bad. Some have put it in front of the computer, pointing down...I think that muffles the sound a bit. The worst would be in the wheel well space where the OEM horn is.