2 into 1 better? - Harley Davidson Forums: Harley Davidson Motorcycle Forum
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post #1 of 11 (permalink) Old 05-14-2010, 01:47 PM Thread Starter
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2 into 1 better?

Didn't want to hijack a thread, and couldn't find what I was looking for in a search.

Why is it that people consider 2 into 1 pipes better than two seperate pipes.

My 1980 low rider had 2 into 1 pipes, as did several of the bikes back then, and all anybody wanted to do was get rid of them and go to the staggered duals.

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post #2 of 11 (permalink) Old 05-14-2010, 01:56 PM
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exh. gas scavaging would be my thoght the merging of the two exh. tracks the more gas you get out the more air and fuel you can get in.
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post #3 of 11 (permalink) Old 05-14-2010, 02:01 PM
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A 2-1 exhaust generally provides more torque then a 2-2 exhaust. Who makes it and how the bike is tuned will vary your results. Thunderheader is one of the highest numbered MFgers for just that...

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post #4 of 11 (permalink) Old 05-14-2010, 02:16 PM
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A 2-1 exhaust generally provides more torque then a 2-2 exhaust. Who makes it and how the bike is tuned will vary your results. Thunderheader is one of the highest numbered MFgers for just that...
Ditto...and you can't beat the sound neither....Like Sonny says...nothing looks or sounds like a Thunderheader...and.... they make ur scoot run like a raped ape....

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post #5 of 11 (permalink) Old 05-14-2010, 02:18 PM
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...and.... they make ur scoot run like a raped ape....
What if the ape liked it.........?

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post #6 of 11 (permalink) Old 05-14-2010, 02:20 PM
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What if the ape liked it.........?
buy her a banana................

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post #7 of 11 (permalink) Old 05-14-2010, 02:20 PM
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{{Off to grocery store}}

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post #8 of 11 (permalink) Old 05-14-2010, 08:30 PM
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If the ape likes it maybe it will push back harder.

90% of all statistics are made up.
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post #9 of 11 (permalink) Old 05-14-2010, 08:49 PM Thread Starter
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LOL You'z guyz!!!

Thanks for the replies. I just found it kind of funny that that's the hot ticket now, when we were desperate to get rid of them when they came stock on the bikes.

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post #10 of 11 (permalink) Old 05-14-2010, 10:17 PM
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LOL You'z guyz!!!

Thanks for the replies. I just found it kind of funny that that's the hot ticket now, when we were desperate to get rid of them when they came stock on the bikes.
Back in the day, when 2-1 pipes came on the superglides, was when everyone was going to drag pipes and having a bike "Dyno'd" was unheard of.

Louder was faster.

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