Disappointing Dyno numbers
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Cruiser
Joined: Dec 2013
Posts: 198
Likes: 1
From: Lakeland, TN
Disappointing Dyno numbers
Just got my bike back today after getting 204 cams and Samson true dual headers with fishtail slip ons. Bike was already stage I upgraded with SE intake, race tuner and Rush slip ons. As it's fuel injected, it had to be re-dynoed. For all that money, I lost 1 hp and gained only 5 foot pounds of torque! This is not at all what I was told, including being advised to, "take it easy on the way home, it's a different bike now." I hadn't read over the dyno sheet yet, but my impression on the way home was that it was pretty much the same. Obviously, I was right. Does this seem to be a reasonable outcome for adding cams and true dual headers? If so, why would anyone spend the money?
Stellar HDF Member
Joined: Jan 2013
Posts: 2,012
Likes: 53
From: Myrtle Beach,SC
Just got my bike back today after getting 204 cams and Samson true dual headers with fishtail slip ons. Bike was already stage I upgraded with SE intake, race tuner and Rush slip ons. As it's fuel injected, it had to be re-dynoed. For all that money, I lost 1 hp and gained only 5 foot pounds of torque! This is not at all what I was told, including being advised to, "take it easy on the way home, it's a different bike now." I hadn't read over the dyno sheet yet, but my impression on the way home was that it was pretty much the same. Obviously, I was right. Does this seem to be a reasonable outcome for adding cams and true dual headers? If so, why would anyone spend the money?
The Place I bought my bike from had a service advisory that pushed a SE Stage one as if it was a necessary thing to do.
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Cruiser
Joined: Dec 2013
Posts: 198
Likes: 1
From: Lakeland, TN
I think They push too hard for these "tunes" and people do them without a full understanding of the probable results. I don;pt understand the way this all goes together so I will likely just do slip ons and Veids for a richer cooler motor and call it a day. These are not race bikes. Much money is spent squeezing blood from a turnip. IMO
The Place I bought my bike from had a service advisory that pushed a SE Stage one as if it was a necessary thing to do.
The Place I bought my bike from had a service advisory that pushed a SE Stage one as if it was a necessary thing to do.
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Cruiser
Joined: Dec 2013
Posts: 198
Likes: 1
From: Lakeland, TN
I really didn't expect anything from the duals, but they are advertised to improve performance. Also, a 2 into one is not really that good of a look on a Deluxe, in my opinion. The real issue is the cams. I compared the two dyno sheets, and very little change occurred. Is that really the expected outcome? Everybody I talked to seemed to think cams really lit a fire under their bike.
Stellar HDF Member
Joined: Feb 2011
Posts: 3,048
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From: Central Jersey
Did you go from a stock cam to the 204? Or did you buy the bike second-hand and maybe there was already a different/similar cam in it? Would be weird if you replaced a 204 with a new 204. The Samson fishtails are unbaffled, right? If so, you'd probably make that HP and TQ up by putting a baffle in the pipe.
As far as a 2:1 not fitting the look of a Deluxe, you've just got to find the right 2:1
As far as a 2:1 not fitting the look of a Deluxe, you've just got to find the right 2:1
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Cruiser
Joined: Dec 2013
Posts: 198
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From: Lakeland, TN
Did you go from a stock cam to the 204? Or did you buy the bike second-hand and maybe there was already a different/similar cam in it? Would be weird if you replaced a 204 with a new 204. The Samson fishtails are unbaffled, right? If so, you'd probably make that HP and TQ up by putting a baffle in the pipe.
As far as a 2:1 not fitting the look of a Deluxe, you've just got to find the right 2:1
As far as a 2:1 not fitting the look of a Deluxe, you've just got to find the right 2:1
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Thread Starter
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Cruiser
Joined: Dec 2013
Posts: 198
Likes: 1
From: Lakeland, TN
Just retread your message. The fishtails have baffles already. Also, I was under the impression that the dyno was to adjust all those issues such that a baffle or not wouldn't matter. What would matter is if after a dyno, you added or remove a baffle. That would change air flow and confuse the computer. Is that not right?
Seasoned HDF Member
Joined: Oct 2010
Posts: 5,250
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From: Florida
I hear you. I spent a lot of money on cams, and while the dyno showed I had gained HP and torque, I never really "felt" the difference all that much, at least in proportion to the money spent. I'm sticking with a simple Stage 1 on the fatboy I have now. The 103 and stage 1 is enough for me.
Last edited by tmac00333; Jun 15, 2014 at 08:34 AM.