dyno runs
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5th Gear
Joined: Dec 2012
Posts: 9
Likes: 0
From: west jordan utah
dyno runs
I would like to know just what you get when you have a dyno done besides a printout of torque and hp on a piece of paper that takes four hrs. Sounds to me like the dyno people are screwing everyone over. how involved is a dyno run can anyone tell me just what is done beside them taking your money.
Tourer
Joined: Nov 2012
Posts: 421
Likes: 71
From: Hayward Ca
Simply put, a dyno tune is making adjustments to your bikes ignition, fuel and air supply, to achieve the most possible horse power and torque, while maintaining optimal air fuel ratio. Downloaded maps can get you close for your bikes modifications but cant take into consideration altitude, ambient temperature, humidity, location, or the differences between each bike.
Outstanding HDF Member
Joined: Jan 2010
Posts: 2,916
Likes: 31
From: earth
Some are just taking your money, but some are analyzing the data between runs and making adjustments to bring your tune into a more favorable condition. If you paid for four hours of dyno time for only a tq/hp printout then you got screwed, should have asked your questions before you laid out the cash.
Stellar HDF Member
Joined: May 2008
Posts: 2,588
Likes: 9
From: Sunny Southern California
A Dyno tune is only as good as the man/woman (the OL is looking over my sholder! LOL!) doing the tune! If you have a compitent, tuner and the proper tuning device (which will vary from one tuner to the other), you can't beat a great Dyno tune for your set-up!
"screwing everyone over", you have much to learn "Grasshopper"!
"screwing everyone over", you have much to learn "Grasshopper"!
Outstanding HDF Member
Joined: Aug 2008
Posts: 2,090
Likes: 7
Also, a good tuner will show you what your bike did before the tuning process and then what it did after he worked his tuning magic. Obviously, If the graphs aren't much different, the tuning process shouldn't take 4 hours. If your bike has had major modifications, tuning isn't optional.
Outstanding HDF Member
Joined: Nov 2006
Posts: 2,144
Likes: 10
From: Mass
..ahh..yes...the Dyno...here's how I see it...is it expensive?...yes...is it absolutely necessary to have done?..no...is it a rip-off?...no..why?..because for one thing...the shop is generally charging the same hourly rate for the Dyno that they would if they were wrenching on your bike....and it's like hiring an excavator, part of what you're paying for is the HUGE cost someone laid out to buy the machine.....
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
You use the word 'run', which is a quite different thing to a 'tune'. To take a run and measure what a bike is giving in power and torque doesn't take very long. To tune the bike while running it on a dyno can indeed take that long. You don't say if you like the way your bike rides now?!
You will read posts in here by members promoting various add-ons that they use to set up their bike after making mods. The only way of doing that and verifying what your bike is doing is on a dyno. For optimum performance and biggest smiles, that is the way it is.
I am absolutely thrilled with my bike. It didn't take 4 hours, but a large chunk of that. I am sure we all hope you are pleased with the way yours rides. Let us know!
You will read posts in here by members promoting various add-ons that they use to set up their bike after making mods. The only way of doing that and verifying what your bike is doing is on a dyno. For optimum performance and biggest smiles, that is the way it is.
I am absolutely thrilled with my bike. It didn't take 4 hours, but a large chunk of that. I am sure we all hope you are pleased with the way yours rides. Let us know!
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Road Master
Joined: May 2008
Posts: 762
Likes: 14
From: Bellevue, NE
You use the word 'run', which is a quite different thing to a 'tune'. To take a run and measure what a bike is giving in power and torque doesn't take very long. To tune the bike while running it on a dyno can indeed take that long. You don't say if you like the way your bike rides now?!
You will read posts in here by members promoting various add-ons that they use to set up their bike after making mods. The only way of doing that and verifying what your bike is doing is on a dyno. For optimum performance and biggest smiles, that is the way it is.
I am absolutely thrilled with my bike. It didn't take 4 hours, but a large chunk of that. I am sure we all hope you are pleased with the way yours rides. Let us know!
You will read posts in here by members promoting various add-ons that they use to set up their bike after making mods. The only way of doing that and verifying what your bike is doing is on a dyno. For optimum performance and biggest smiles, that is the way it is.
I am absolutely thrilled with my bike. It didn't take 4 hours, but a large chunk of that. I am sure we all hope you are pleased with the way yours rides. Let us know!
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Member
Joined: Jul 2009
Posts: 4,310
Likes: 1,079
FWIW, I've had multiple efi HD bikes since 2003. I've had 6 different Dyno tunes after various engine upgrades. All of them costing between $300-500. All of these tunes definitely improved the running of the bike but none of them were perfect. It's just too difficult to get the bike running perfectly on a dyno. It's just not real world. Sure WOT is generally spot on but all the transitions, low load, high load situations are very difficult to tune for unless the tuner is going to rack up many hrs and many miles on the dyno.
I now own a Powervision its the best thing since sliced bread. It calibrates the tune to the exact engine build for exactly how YOU ride it. Every single cell (with a few exceptions) gets improved by the PV's Autotuning capability.
If your a handsoff engine guy than dyno tuning might be best for you. If you have some basic computer skills and basic engine knowledge than a PV is the way to go. I only wished it existed years ago.
After all the year's of experience of efi tuning I can only recommend saving your time, $ and dyno miles on your bike and instead get a PV. You'll never regret it and your bike and wallet will thank you.
I now own a Powervision its the best thing since sliced bread. It calibrates the tune to the exact engine build for exactly how YOU ride it. Every single cell (with a few exceptions) gets improved by the PV's Autotuning capability.
If your a handsoff engine guy than dyno tuning might be best for you. If you have some basic computer skills and basic engine knowledge than a PV is the way to go. I only wished it existed years ago.
After all the year's of experience of efi tuning I can only recommend saving your time, $ and dyno miles on your bike and instead get a PV. You'll never regret it and your bike and wallet will thank you.
Ultimate HDF Member
Joined: Feb 2006
Posts: 5,190
Likes: 5
From: Eastern Washington
Like already stated there is a difference in "run" and "tune" If your seeing guys put a bike on a dyno just to record torque and HP (run), then yes 4 hours and $300 is a ripoff. You can get that in a couple minutes. "tunes" can take 4 hours but a good tuner will take as long as it needs to get it right and for a flat rate, not hourly.