V&H Duals vs Stock - Dyno results
Thread Starter
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Road Warrior
Joined: Mar 2005
Posts: 1,379
Likes: 2
From: Central, NY
V&H Duals vs Stock - Dyno results
Today I installed V&H True Duals on my 2005 Road King Classic with 20K miles. The bike is a Stage 1 TC88 with SE Air Cleaner, K&N filter, PCIII, and V&H Ovals.
Last fall it was dyno'd but not tuned, with that exact set upand stock header pipes. It dyno'd out at 66.65 HP and 72.72 Torque. As you can see,the A/Fwas a bit fat, but for comparison purposes those numbers are solid. Dyno chart is below:
Today, after installing the True Duals (nothing else), it was dynoed at 69.20 HP with 76.20 torque.After tuning we got 73.86 HP and 77.18 torque. Numbers I am very pleased with. Chart below:
The biggest surprise was the sound! The True Duals absoultely unleash the sound of the Ovals under load. At idle, the sound is a bit deeper and more resonant, but the volume is much the same. Under load, the pipes open up and roar with a significant increase in volume and sound quality. To my ear, they soundgreat and I can't recommend them enough.
The best news was Mrs. Booksloves the new sound and volume, too!
Kudos to Aaron Miller at Miller's Motorworks, Newfield, NY for theinstall and tune.
I hope this post and these charts are of value to someone contemplating this mod.
Last fall it was dyno'd but not tuned, with that exact set upand stock header pipes. It dyno'd out at 66.65 HP and 72.72 Torque. As you can see,the A/Fwas a bit fat, but for comparison purposes those numbers are solid. Dyno chart is below:
Today, after installing the True Duals (nothing else), it was dynoed at 69.20 HP with 76.20 torque.After tuning we got 73.86 HP and 77.18 torque. Numbers I am very pleased with. Chart below:
The biggest surprise was the sound! The True Duals absoultely unleash the sound of the Ovals under load. At idle, the sound is a bit deeper and more resonant, but the volume is much the same. Under load, the pipes open up and roar with a significant increase in volume and sound quality. To my ear, they soundgreat and I can't recommend them enough.
The best news was Mrs. Booksloves the new sound and volume, too!
Kudos to Aaron Miller at Miller's Motorworks, Newfield, NY for theinstall and tune.
I hope this post and these charts are of value to someone contemplating this mod.
Road Warrior
Joined: Oct 2006
Posts: 1,650
Likes: 1
From: North West Ohio
RE: V&H Duals vs Stock - Dyno results
Nice numbers. I have the same set up on my Street Glide except I have Wild Pig slip ons. I love the sound of my bike since I installed the V&H Duels. I have not had mine dyno`d yet but it runs very strong compared to stock. I am happy with the way it runs now and am not sure a dyno would be worth the extra money. How much changing of the map did they make? I am running a map from Jamie at Fuel Moto right now with a few changes that I have done to eliminate the decel popping. Overall I really like the way it runs and I am getting right at 47 mpg with it on short rides. I have not had time for a longer ride to compare mileage.
Ride Safe,
Mike
Ride Safe,
Mike
Thread Starter
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Road Warrior
Joined: Mar 2005
Posts: 1,379
Likes: 2
From: Central, NY
RE: V&H Duals vs Stock - Dyno results
The PCIII was loaded with the canned map for the Stage 1 with V&H Ovals on the stock pipes. It took 10 runs to get the AF correct across the board - it was generally rich. I recommend a good tuner, if you have one in your neck of the woods.
I went into this pipe mod convinced I would lose low end torque and that the bike would sound about the same. I was pleasantly surprised and frankly, it couldn't have worked out better.
I went into this pipe mod convinced I would lose low end torque and that the bike would sound about the same. I was pleasantly surprised and frankly, it couldn't have worked out better.
Road Master
Joined: Sep 2006
Posts: 759
Likes: 0
From: Hampton, VA
RE: V&H Duals vs Stock - Dyno results
The results are good to see, I am running essentially the same setup on my Ultra, I haven't had it dyno'd but I have been pleased with the results I got from the pipes and ovals, it sounds excellent.
Road Warrior
Joined: Mar 2006
Posts: 1,346
Likes: 3
From: Texarkana, TX
RE: V&H Duals vs Stock - Dyno results
Who offers the best prices on the true dual setup that your talking about? Also can I just change to the Vance & Hines true dual headers for now anduse my S/E Street Performance mufflers until I get a lil more change in the pocket?
John
John
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Road Warrior
Joined: Mar 2005
Posts: 1,379
Likes: 2
From: Central, NY
RE: V&H Duals vs Stock - Dyno results
M&M had them for just over $300. I think Eastern Performance may have them slightly cheaper. You can put whatever standard slip-on you like on these duals, but I can only vouche for the performance numbers with the ovals.
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Cruiser
Joined: Oct 2005
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RE: V&H Duals vs Stock - Dyno results
ORIGINAL: jmbear328
Who offers the best prices on the true dual setup that your talking about?
Who offers the best prices on the true dual setup that your talking about?
http://cgi.ebay.com/ebaymotors/VANCE...spagenameZWDVW
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Cruiser
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RE: V&H Duals vs Stock - Dyno results
The only thing I can say on this topic is this - install them and crack the throttle the first time from a rolling start in 1st, burn it up through the first three gears and you will have no regrets. Trust me. 
. I did duals and ovals with a PCIII - if there is a power loss, you would to see it on a chart because you could not tell on the road. My buddy hasan'03 RK (pipes and stage 1) and I can smoke him from a rolling start.
Besides if you are worried about power, think of it this way - how many times have you got on your bike and said "I am going to go out and look for a race today because that is why I bought a Harley" vs. "I am going to get on the bike, ride, listen to the pipes and enjoy the afternoon because that is why I bought a Harley".
. I did duals and ovals with a PCIII - if there is a power loss, you would to see it on a chart because you could not tell on the road. My buddy hasan'03 RK (pipes and stage 1) and I can smoke him from a rolling start. Besides if you are worried about power, think of it this way - how many times have you got on your bike and said "I am going to go out and look for a race today because that is why I bought a Harley" vs. "I am going to get on the bike, ride, listen to the pipes and enjoy the afternoon because that is why I bought a Harley".
Tourer
Joined: Sep 2007
Posts: 383
Likes: 1
RE: V&H Duals vs Stock - Dyno results
Amen folkxrock, I couldnt agree with you any more. I also have duals and think my bike runs great. I bought a harly for the looks and the sound not to drag race. Buy the way those are good #s for those so called power robbing duals.