Originally Posted by rapidoxidationman
If loud pipes save lives, imagine what learning how to ride that thing would do.
Seriously. If your reason for straight pipes has ANYTHING to do with "safety", then you just might have other problems that you should deal with first.
Because perhaps unlike you, my loud pipes DID save my life. Story below.
For reference, here is a link. The prior owner did this mod, which I think was too much. This video was shot by my friend who wanted a video of backfire. So I delivered. I do not usually do this...
Anyways, I consider your idea ignoring fundamental principles of human/driver behavior and physics.
I'll firstly begin with anecdotal evidence:
I was riding on the 405 in Los Angeles. Surrounding traffic was cruising at around 10MPH. I was splitting at around 25MPH. I heard an extremely loud braking and slightly skidding of tires. Whatever; eyes on the road. I took an exit to fill-up. I ended up seeing an old friend, so after filling up, we rode to near the air pump of that gas station and began chatting. Some minutes later, a car pulls up directly next to us. You know what the first thing out of this guy's mouth was? "I know you'll hate me, but I nearly killed you." "What do you mean?" "Yeah, if I hadn't heard you coming, I would have killed you, I didn't check my mirrors." Basically, the driver was in lane 3. He saw a diagonal opening forward into the carpool lane, aka lane 1. He pins it from lane 3 toward lane 1. He rather quickly put together the fact that the motorcycle he suddenly heard coming was probably splitting, therefore probably interfering with his line of movement. Turns out that driver was also a rider, so he felt great remorse for his sequence of actions.
The human responses system "loud motorcyclists" prey on as a viable form of increasing chances of safety (if the story above did not change your mind):
Basic human behavior in the gross world teaches we have at least 5 senses: sight, touch, smell, sounding and taste.
What brings awareness of a driver to a motorcyclist? You would wager it is primarily sight, and you would wager by implication of your argument is enough for drivers to be aware of us. But that story above should be enough to illustrate to you sight is not enough, and perhaps not in all cases even primary.
We all know sight is not always used by driver, e.g. above. What other way can our presence travel to the driver without our motorcycle physically having yet reached near them, such as achieved through sight? Let us say from 50 feet away, can we make them: smell us? touch us? taste us? Maybe.
But our presence can surely be sent rather far with sound. This lends us to the idea of louder exhausts *angelic voice*. It's another sense we can viably channel our presence to a driver. If it is not damaging our hearing, it can only help, right? Edit: If I have to circumvent the noise of my exhaust with ear-plugs, then I consider that a problem.
Now to address the psycho-social factor. Are loud exhausts an influential factor as to why some people hate motorcyclists? Maybe. But I don't think it's ultimately what causes road rage between motorcyclists and drivers, which is what really matters. Have you seen the YouTube videos of "bikes vs. cagers"? Not ONE of the vehicle drivers yell, "You and your loud exhausts ruining my day, blah, blah, blah!" It's always, "You cut me off!", or "You got too close to me!", etc. In any case, I'll wait for the study to suggest or disprove that theory in the next edition of Journal of Sociology
On that same token, even with my exhaust which sounds like someone tearing canvas x100, I usually do not pin it or enter RPMs above 4k. Yeah, sometimes I am ripping it around town, but it's usually during night on the freeway. And frankly, I think some people enjoy hearing those moments. I have had numerous people comment on the sound of my exhaust. They all said it's loud, but they liked the "race" tone.
So yeah loud pipes ftw.