Is a dynometer tune still the best
Road Captain
Joined: Sep 2014
Posts: 592
Likes: 46
From: Connecticut
Great news. I'll be where you are in about a year. PV and dyno tune. Remember, its not just about numbers. Its also about getting rid of the lean condition and running cool and strong.
Enjoy it, I'm sure you're going to feel 16%.
Enjoy it, I'm sure you're going to feel 16%.
Outstanding HDF Member
Joined: Aug 2012
Posts: 3,217
Likes: 90
From: Detroit
That really depends on who does it, and how much of your "safety margin" they are willing to sacrifice to get improvements in power.
Grand HDF Member
Joined: Nov 2012
Posts: 3,515
Likes: 887
From: Upstate New York
As a follow-up for my trip to a DynoJet dyno, I thought my results were impressive with the PowerVision. My bolt on Stage 1 untuned baseline HP was 62.41 and tuned climbed to 72.76. Beginning torque was 72.75 and ended up at 83.77. I was expecting something in the 70-75 / 80-85 range which is about avarage for any decent Stage 1.
Overall, a PowerVision dialed in on their DynoJet dyno yeilded a 16% gain flat across the board. For gains like that, I feel it was money well spent. I feel good to have a dyno sheet in my hand too.
Overall, a PowerVision dialed in on their DynoJet dyno yeilded a 16% gain flat across the board. For gains like that, I feel it was money well spent. I feel good to have a dyno sheet in my hand too.
Road Warrior
Joined: Jun 2010
Posts: 1,368
Likes: 27
From: Australia
yeah, there is four of us who all have the same kit in our bikes, when we ride we all about even, they all dyno tuned yet i am running a canned/internet map
the big difference is the warm-up, cold starts, low speed driving, they warm there bikes up for 5 mins plus and keep on the clutch, my bike has none of these issues, great amusement
the big difference is the warm-up, cold starts, low speed driving, they warm there bikes up for 5 mins plus and keep on the clutch, my bike has none of these issues, great amusement
Stellar HDF Member
Joined: Sep 2009
Posts: 2,114
Likes: 666
yeah, there is four of us who all have the same kit in our bikes, when we ride we all about even, they all dyno tuned yet i am running a canned/internet map
the big difference is the warm-up, cold starts, low speed driving, they warm there bikes up for 5 mins plus and keep on the clutch, my bike has none of these issues, great amusement
the big difference is the warm-up, cold starts, low speed driving, they warm there bikes up for 5 mins plus and keep on the clutch, my bike has none of these issues, great amusement
If your can-mapped bike runs better than your buddies' custom-map, dyno tuned bikes they simply got shitty tunes from an incapable dyno jockey...not that an untuned bike runs just as good, if not, better than a properly tuned bike.
Bob
Road Master
Joined: Aug 2012
Posts: 854
Likes: 20
From: CT
This on the other hand is not true. I hear this all the time from people that have never even watched a harley dyno tune, never mind operated a dyno. With the normal dyno jet 250i that most tuners are using there is no magic dial to spit out whatever numbers you want. The software is programmed for the drum weight of your specific dyno and cannot be changed, unless you went through the trouble to physically alter the drum weight on the dyno. Some dynos are happier than others, some enough that you have to wonder what the operator has modified to make it that way. Aside from little things like different correction factors, tire pressure, blowing cool air into the intake, standing up vs sitting down, etc. There's no easy way to drastically change numbers, and no reason to imo. Nothing good will come of fooling the rider and yourself. Most of the numbers I see online are pretty consistent, these bikes generally make what they make. It's pretty easy to tell when one is out of line.
Last edited by vdop; May 24, 2015 at 06:52 AM.
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Tourer
Joined: Dec 2005
Posts: 417
Likes: 3
From: CT
I agree with the above post.
A good independent dyno shop, (not a dealer dyno) who has been in business a long time is a valuable asset for riders.
A quick diagnostic dyno pull or two on the dyno will quickly tell you if your bike is truely running well......*** or butt Dino's are notoriously wrong most of the time.
Not all dyno sessions are about expensive "tunes" and is no harder on your bike than you riding it on the street.
A dyno is a tool that can tell you much more than just hp numbers.....good for diagnosing many other problems.
A good independent dyno shop, (not a dealer dyno) who has been in business a long time is a valuable asset for riders.
A quick diagnostic dyno pull or two on the dyno will quickly tell you if your bike is truely running well......*** or butt Dino's are notoriously wrong most of the time.
Not all dyno sessions are about expensive "tunes" and is no harder on your bike than you riding it on the street.
A dyno is a tool that can tell you much more than just hp numbers.....good for diagnosing many other problems.
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