Best headers
Road Warrior
Joined: Jun 2010
Posts: 1,717
Likes: 35
I have 255 cams and a Pro Pipe Chrome. Currently getting close to 40 MPG unless I ride it hard in the curves with lots of accel / decel, downshifting and getting on it in the straights.
I just ordered a Set of Cobra headers and Vance & Hines Monster Ovals. I got tired of the loud droning of the Pro Pipe on long trips. I hope that I can maintain the same level of performance after the swap.
I just ordered a Set of Cobra headers and Vance & Hines Monster Ovals. I got tired of the loud droning of the Pro Pipe on long trips. I hope that I can maintain the same level of performance after the swap.
Extreme HDF Member
Joined: Jun 2011
Posts: 14,731
Likes: 2,536
From: Mountain Top, Alabama
VH Power Duals did the trick for my bike on the dyno, the power chamber produces great benifit and allowed me to stay with a dual setup.
I wouldn't change a thing - SERT, 255, 40mpg.
I wouldn't change a thing - SERT, 255, 40mpg.
Road Captain
Joined: Jan 2009
Posts: 739
Likes: 2
From: St. Louis
Stock header, 1st Gen Jackpots, FM 107, PCV with auto tune. I recently leaned my A/F ratio to 14.2:1 in the cruise range (i.e. < 3K RPM and < 40% throttle) The last two tanks of straight highway @ 65-70 MPH netted 46.95 & 47.17 MPG. The one tank that was mixed riding netted just over 40 MPG. The stock non-catted header is not that badly designed. I can't justify spending the money right now for something that won't gain much more than what I have.
Advanced
Joined: Jul 2008
Posts: 58
Likes: 0
From: Ohio
Looking at your dyno numbers, i'd be very surprised if you could get better performance out of different headers. I also have an 09 Street Glide. With a simple stage one my fuel mileage average was 35 mpg as well. Now i have a 107 build and still getting about the same mpg. I'm not sure what the difference is with these guys that claim 40+ mpg after a build. My advice: Forget the numbers. If you are happy with the bikes performance then leave it alone. You could spend a lot of time and money chasing those few extra mpg and wind up with nothing better than you have now.
Last edited by timmyd; Jan 6, 2016 at 05:21 PM.
Road Warrior
Joined: Mar 2009
Posts: 1,518
Likes: 59
From: Port Neches Texas
106 hp out of a 103 is impressive, who did your tune?
Seasoned HDF Member
Joined: Sep 2008
Posts: 12,566
Likes: 85
From: Calgary
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
Likes: 143
From: Santa Cruz
Any of the 2-1-2 headers from v&h, Fullsac or fuelmoto would be my choice. I don't like the look of v&h ones and they do hit before the board when Leaned over. stainless on the fuelmoto ones is nice but the ceramic ones from Fullsac may run cooler and they also have the sportpipe if ya want to save a little. They will all perform equaly with your set up.