Disappointing Dyno numbers
Outstanding HDF Member
Joined: Aug 2012
Posts: 3,217
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From: Detroit
Don't take my word for the huge Stage 1 increase being normal. Look at the rwhp and torque graphs that HD itself prints in its Screamin' Eagle catalog, and also reproduces online in a pdf version of the catalog. Those graphs clearly show exactly what I am telling you is the truth.
Jim G
Jim G
Ya'know, when we go in for warranty work for commonly known problems, don't they often say, "That's normal", or, "Never came across that problem before".
How many takers would there be if Harley was offering a 4 horsepower increase for $1500 plus?
Last edited by Warp Factor; Jun 15, 2014 at 04:31 PM.
Stellar HDF Member
Joined: Feb 2014
Posts: 2,710
Likes: 528
From: Lethbridge, Alberta Canada
I won't take Harley's word for it either.
Ya'know, when we go in for warranty work for commonly known problems, don't they often say, "That's normal", or, "Never came across that problem before".
How many takers would there be if Harley was offering a 4 horsepower increase for $1500 plus?
Ya'know, when we go in for warranty work for commonly known problems, don't they often say, "That's normal", or, "Never came across that problem before".
How many takers would there be if Harley was offering a 4 horsepower increase for $1500 plus?
Jim G
Extreme HDF Member
Joined: Aug 2012
Posts: 11,392
Likes: 184
From: Big ol Titties
Don't take my word for the huge Stage 1 increase being normal. Look at the rwhp and torque graphs that HD itself prints in its Screamin' Eagle catalog, and also reproduces online in a pdf version of the catalog. Those graphs clearly show exactly what I am telling you is the truth.
Jim G
Jim G
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Cruiser
Joined: Dec 2013
Posts: 198
Likes: 1
From: Lakeland, TN
It's hard to analyze upside down graphs, but they sure look similar . . .
Are you sure that your dealer didn't simply reprint the Stage 1 graph when he intended to print the cam graph?
It wouldn't be the first time a dealership or indy has done that accidentally.
Jim G
Are you sure that your dealer didn't simply reprint the Stage 1 graph when he intended to print the cam graph?
It wouldn't be the first time a dealership or indy has done that accidentally.
Jim G
Stellar HDF Member
Joined: Feb 2014
Posts: 2,710
Likes: 528
From: Lethbridge, Alberta Canada
I don't think the HD claims are that outlandish, although I'm sure they would take exceptionally detailed and time consuming efforts to reproduce outside an HD R&D dyno facility. Few of us have access to that kind of facility or assistance. But, more importantly, I think that HD dealerships rather routinely screw up the installations or tunes or both. THAT's the problem.
Jim G
Grand HDF Member
Joined: May 2008
Posts: 4,624
Likes: 189
From: Newcastle, Ca.
Unrealistic expectation perhaps. I dont know. Race a 96" stage 1 bike then decide. lol
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Cruiser
Joined: Dec 2013
Posts: 198
Likes: 1
From: Lakeland, TN
Well, at the same dealership, at least. Unless they got a different machine since November, it's the same machine.
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Cruiser
Joined: Dec 2013
Posts: 198
Likes: 1
From: Lakeland, TN
Mid 90's tq qualifies as a cammed 96". You would notice a sop bump from stage 1 to a cammed and dyno'd bike. Oct1949's sheets on several bikes confirms this. I installed cams with a 2n1 on my 88", prior being a stage 1, and noticed a nice bump.
Unrealistic expectation perhaps. I dont know. Race a 96" stage 1 bike then decide. lol
Unrealistic expectation perhaps. I dont know. Race a 96" stage 1 bike then decide. lol
Outstanding HDF Member
Joined: Oct 2011
Posts: 3,492
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From: Illinois
Most expect to much from to little out of most performance mods. Sadly, most get bad advice too. Think of what you said, that great improvement was noted after your stage one. A stage one is mostly more air in, more air out.
So, if you want to add numbers to your Dyno sheet you need even more air in and more air out. That's done with changing the bore, the stroke, heads and valves. That's all more air in and more air out. All of that of course is getting fuel to it and the lift of cams. More fuel in and more lift from the cams to allow more in and out.
If you do one of those, 2 of those but it doesn't have a supporting cast around it, it's not a match up and the performance isn't there. Also, a Dyno itself is not for added numbers. A Dyno is for a tune and to get all of your mods and performance upgrades to work together as best as it possibly can, that is why you see added numbers. Without a Dyno tune a persons performance upgrades are not meshing at peak performance together. A Dyno brings all of it together as best it can and tunes the engine and aligns all the mods to work as one.
So, if you want to add numbers to your Dyno sheet you need even more air in and more air out. That's done with changing the bore, the stroke, heads and valves. That's all more air in and more air out. All of that of course is getting fuel to it and the lift of cams. More fuel in and more lift from the cams to allow more in and out.
If you do one of those, 2 of those but it doesn't have a supporting cast around it, it's not a match up and the performance isn't there. Also, a Dyno itself is not for added numbers. A Dyno is for a tune and to get all of your mods and performance upgrades to work together as best as it possibly can, that is why you see added numbers. Without a Dyno tune a persons performance upgrades are not meshing at peak performance together. A Dyno brings all of it together as best it can and tunes the engine and aligns all the mods to work as one.