Fuel injection!
Iron Barrel: one carb - Kick, Kick, Kick cough, Kick thump, thump, thump, etc
Honda: four carbs - Whurrrr, sputter, sputter, cough, Whurrrr sputter sputter, cough, etc until warm.
BMW: Fuel Injection. - Wh, tick, tick, tick, tick,tick, tick,tick, tick, etc
jim