Pardon me from poaching over from the C14 side, but I saw the subject and had to check it out.
I was just wondering why the C10 guys would want to change from dual exhausts to single, while the C14 guys want to change their single exhaust into duals?
Good question. I guess I could counter by saying: I was just wondering why the C14 guys would want to change from single exhausts to dual, while the C10 guys want to change their dual exhaust into singles??
Answers/lies/wishful thinking:
It's all Jims's fault!!!!!
In the beginning I wanted to increase the size of the head pipes,
I later opted to mod to 4 into 1 as Jim had found certain advanteges (better mid range power curve) on his original build.
Jims current design seems to give better mid and improved upper power than his first design.
I wanted my bike to look and sound different than other Connies.
Jim had a set and I didn't...... (Jealosy)
I think the 4 into 1's have better scavenging effect over 4 into 2's.
Most of the aftermarket Header systems are 4 into 1's.
They have a "definite" weight advantage over the 4 into 2's.
I wanted to try them on my dyno to see if they did change things.
BUT!!!!
Steves answer is probably the best/most honest answer to your question.....
the grass is always greener... steve
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Ride safe, Ted