Converted pipes to true duals

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Sep 24, 2012 | 07:38 AM

Brettfullthrottle

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Joined: Aug 2008

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From: Twin Cities,Mn.

Converted pipes to true duals

Hey guys,
I took a stock set of header pipes and cut the crossovers off and welded the pipes shut. (My punched out screamin' eagle mufflers sounded fine and I couldn't justify dropping 5-6 hundred on a set of pipes!)
I can't believe the difference! The bike really seemed to pick up power as well as run better! Even my buddy said he noticed a difference in the power! (We hot rod quite a bit when we ride together!)
Does this make sense? I don't think its just in my head,it really seems to run and perform better!

Sep 24, 2012 | 08:55 AM

Reindeer

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From: Suburban Mpls, Minnesota

I would have assumed you'd loose some midrange torque by eliminating the crossover. Probably sounds better though.

Sep 24, 2012 | 11:07 AM

Brettfullthrottle

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Joined: Aug 2008

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From: Twin Cities,Mn.

I seemed to pick up across the board. It really seems to pick up around 3500 RPM's (That's where the Andrews 37 cam kicks in)

Sep 24, 2012 | 11:21 AM

SURFOR Chop

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Joined: Apr 2007

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From: Seattle, WA

Probably makes the stock system approximate 'drag pipes' ...

I'd be interested to know how the length of the stock pipes with mufflers compares to the length of drag pipes ... as I understand, there is some optimal length 42" or so, as I recall ...

I tend to agree that in theory, you should have lost a little down low up to the mid-range ... but, who knows ... would have been interesting to see before and after dyno graphs ...

R/
'Chop