As requested, here's a thread about horn mods. The one that came with the car was very weak and it's just ashame to use it. So I have decided to put in a pair of air horns.
If you are in Toronto, you may visit Tons of Tools in Scarborough and they sell complete air horn kit for only $20CDN; can't go wrong for $20, eh...
Here're some photos to share...
These horns are
loud and they do scare people. However, I have found that the horns aren't that loud when you are traveling @ high speed (over 100km/h) as compared with a pair of disc horns with each rated @ 132db.
On my old Matrix, I installed a pair of disc horns I got from Canadian Tire (Fiamm brand). The cost was $28CDN each. They gave good result as well in terms of scaring people
Stay away from one-piece air horn with compressor built-in (which is available from eBay). Even though it's rated @ 139db, it's very weak...
A lot of people like to purchase Hella horns but they aren't as loud as compared with my cheap air horns nor the Fiamm horns. However, the Hella horn does look sharp, heh.
.Eric