I'm just trying to get some honest opinions on reliability of peoples 400s after light/heavy mods. My bike is HEAVILY modded in the looks department but 100% stock in engine area. My buddy has a fairly heavy modded 400 and has been lucky so far other than water always getting in the air box due to removal for K&N with outerwear. He only gets 1-2 bike lengths on me at the most. I'm not sure if I want to mod or not, just looking for opinions Thanks