What's your favorite mod?

[Jamesp]

What's you favorite mod? Mine hands down air horns. Twice in the last month I've had an SUV and a pickup truck decide to drift quickly into my lane (the infamous Texas drift) without bothering to use an indicator. Truth be told, I believe they did not know I was there. That didn't last long though, as I hit the air horns their sense of self preservation kicked in , and they returned to their lane in short order. The SUV started back to their lane, STILL did not see me, and started to run me off the road again, the second very long blast convinced them their life was in danger so they quickly returned to their lane. What is you favorite mod?