Equalizing exhaust pressure

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Jan 18, 2014 | 09:17 AM

#21

'05Train

Ultimate HDF Member

Joined: May 2008

Posts: 7,439

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From: 'Noke, VA

Quote:

Originally Posted by smitty901

You do not want to Cure it it is not a sick. They are designed that way.
It is called scavenging and it one of the best ways to get a Big Vtwin to run right and tune well. So called True duals are not the answer

True. With unequal lengths and different paths you'll cause problems if you equalize flow.

Jan 18, 2014 | 09:29 AM

#22

Yellotang

Ultimate HDF Member

Joined: Apr 2006

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From: Amherst, VA

Quote:

Originally Posted by WILDWOOD_1124

The difference in flow is annoying! Nothing to do with performance, just want it close.

Not trying to be a jerk here, but is it really that important? Life is too short to be bothered by this unless there is a really good reason why it annoys you.

Jan 18, 2014 | 10:00 AM

#23

WILDWOOD_1124

Outstanding HDF Member

Joined: Nov 2013

Posts: 2,618

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From: Indiana

Quote:

Originally Posted by Yellotang

Not trying to be a jerk here, but is it really that important? Life is too short to be bothered by this unless there is a really good reason why it annoys you.

I would just like for my dual exhaust to sound like dual exhaust when I'm riding my bike. I've always liked the sound of duals on my cars and trucks. Just putting a glass pack muffler on a single exhaust to me doesn't compare to the sound on a nice set of duals. People spend $500-$1000 everyday to make their ride sound the way they want. And a lot of companies have made some serious $ from it.

Jan 18, 2014 | 10:05 AM

#24

smitty901

Seasoned HDF Member

Joined: Feb 2008

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The scavenging of the exhaust between front and rear cyl serves to split the difference between a 2 -2 exhaust and a 2-1 it does it very well.
Another reason why the Jackpot 2-1-2 headers work out so well in the standard flow for stock to mild builds and the high flow version works so great on larger builds.

Jan 18, 2014 | 11:14 AM

#25

Veekness

Elite HDF Member

Joined: Nov 2013

Posts: 4,377

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From: Santa Clarita

Sounds like the OP's concerns will be addressed with a two into one...they actually seem to work better than duals anyway...so if you're still fretty about it, there's your answer! It's all about how the bike runs, anyway, not about the way it sounds, although on Harleys, those two issues are generally closely related...but not in this case.

Jan 18, 2014 | 11:23 AM

#26

fabrik8r

Outstanding HDF Member

Joined: Jan 2010

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From: earth

Quote:

Originally Posted by WILDWOOD_1124

If you want it to sound like a dual exhaust then you need to buy a "true" dual exhaust system, and not try to cheap out with just slip ons for the OEM header contraption. I don't think a pressure differential is the root culprit to why your exhaust doesn't sound the way you think it should.

Jan 19, 2014 | 08:36 AM

#27

jim518

Cruiser

Joined: Sep 2013

Posts: 161

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From: Canada

Maybe try adding a second baffle to the right side? Something like one of these.

Amazon.com: Drag Specialties HP-Plus Exhaust Pipe Baffle - 2in. I.D. 202032: Automotive

Jan 19, 2014 | 09:30 AM

#28

sg2007

Tourer

Joined: Jul 2007

Posts: 251

Likes: 1

I noticed the same with my gutted oem header,didnt bother me much.Im also running Reinharts slips with 2 1/4 in baffle,so the flow was exiting more on the right than on the left.yesterday i installed Cobra's Power port duals,they are a dual headpipe with a hidden crossover.Install was easy and what I did notice afterwards that flow and sound did increase a little thru the left side.Sound better than before and closer to that Harley sound I was looking for I also wanted the true dual look on my bike without hurting low end torque.