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Originally Posted by taxonomy  You're going to knock off what? Maybe 15 pounds off a bike and rider combo that weighs, maybe, 650 pounds? It could not possibly matter. It also comes off the bike low down. |
I love how all of your conclusions usually sound something like "I don't understand the benefits therefore there are no benefits." There are lots of places on a bike where you can shed pounds. When you start combining them, it becomes pretty significant (especially rotating masses).
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Originally Posted by taxonomy The throttle response argument is generally based on harmonics. That's going to depend on escape velocity of gas. The "stronger" signal is going to be either better or worse, depending on throttle position and rpm. Stock systems are highly tuned by very, very smart people that designed the whole engine in the first place. Modern EXUP style exhaust valves are meant to work as a system. |
Huh??? Throttle response is not even remotely based on any one property of the engine. You seem to be forgetting intake cams, exhaust cams, porting, jetting/fuel mapping, RPMs, compression, and the like before you even get to the exhaust system.
Stock exhausts are not designed to get maximum performance from the engine. They are designed to meet noise and emission requirements for the area they will be sold in (lean fuel mapping at certain RPMs too).
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Originally Posted by taxonomy At some level loud is just loud. I have no idea why people think loud is good, it's just loud. When you ride your responding to input that competes for your attention. I would assume you'd want to minimize inputs that contained no relevant data, like exhaust noise. Even the tightest stock exhaust will tell you all you need to know. |
Here we go again with the "I don't understand the benefits therefore there are no benefits" mentality. Believe it or not but people ride for all sorts of different reasons and for some the loud scream of a race pipe on an I-4 or the deep "potato-potato" from a V-twin with mini pipes adds to their experience. By your reasoning no one should own an SV-650 because a Ninja 250 costs less, burns less fuel, and can still exceed the speed limit on any road in the USA.