"DYNO" Numbers For SOFTAILS
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Club Member
Joined: May 2007
Posts: 145,895
Likes: 821
From: 40 miles Northeast of Indy..
VEHlaon48
Your post got me thinking so I called the service guy. The dyno run that I thought was stock was actually a pre-SERT tune baseline. Soooo, I find out that the dude ran the dyno with Cam, pipes, and air filter. Then he tuned it with the SERT and got the second numbers. Bottom line is I don't know what it had stock. Now I guess it does not matter, because my numbers are 85/105 and I will go from there!
Thanks
Your post got me thinking so I called the service guy. The dyno run that I thought was stock was actually a pre-SERT tune baseline. Soooo, I find out that the dude ran the dyno with Cam, pipes, and air filter. Then he tuned it with the SERT and got the second numbers. Bottom line is I don't know what it had stock. Now I guess it does not matter, because my numbers are 85/105 and I will go from there!
Thanks
That's normally the way things is done, UNLESS U agree to pay extra for a base line run.. Think they will have to set up Ur bike on the dyno, warn her up and then make usually 3 runs to get a good average reading, then take it off the dyno , let her cool before then can start to do the mods U want.
Thats at least 1/2 to 1 hr added labor plus dyno time that most won't pay for.
Go back to when I started this thread, I posted my base run results were after stg1 was installed but before it was tuned..
So with factory setting and the Rush pipes which are claimed to add up to 5HP more, Still my base dyno was ---63 HP / 78.8 TQ..
So its possible the actual base could have easily been around 60 HP and 76-77 TQ.
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Tourer
Joined: Nov 2009
Posts: 263
Likes: 0
From: Oklahoma
Sometimes on my dyno it's embarrassing to show the customer how much he paid for each HP he gained!! Most of the time it's not worth it. JMO.
That's when you need to explain that there is more to a dyno tune than the printout, tell them that although they didn't gain much on wide open but they gained alot on the cruising ranges. That's the problem with dyno runs, people get to caught up in the peak numbers and don't pay attention to the rideability. I tuned a 103 in a street glide last week, all it has is pipes and a/c, the guy thought it would make over 100 HP and 100 TRQ, when he came to pick it up I had him ride it before I gave him his sheet, he came back grinning from ear to ear happy as a pig in mud. Then I gave him his sheet, it was like 90 HP and 103 TRQ (something like that), now he thinks his bike is a turd.
Tourer
Joined: Nov 2009
Posts: 263
Likes: 0
From: Oklahoma
That's when you need to explain that there is more to a dyno tune than the printout, tell them that although they didn't gain much on wide open but they gained alot on the cruising ranges. That's the problem with dyno runs, people get to caught up in the peak numbers and don't pay attention to the rideability. I tuned a 103 in a street glide last week, all it has is pipes and a/c, the guy thought it would make over 100 HP and 100 TRQ, when he came to pick it up I had him ride it before I gave him his sheet, he came back grinning from ear to ear happy as a pig in mud. Then I gave him his sheet, it was like 90 HP and 103 TRQ (something like that), now he thinks his bike is a turd.
Road Captain
Joined: Jun 2007
Posts: 547
Likes: 2
From: Oregon
Peak numbers are important to some people. But IMO, you're better off looking at the average torque under the curve for street performance.
If you build for torque the result will be a better performing street bike and the hp will take care of itself.
If you build for torque the result will be a better performing street bike and the hp will take care of itself.
Looks a little like your clutch could be slipping.
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Road Master
Joined: Aug 2010
Posts: 1,067
Likes: 2
From: New Hampshire
Some people have asked me to re-post this. So here it is.
My goal was a broad and smooth power curve. Lots of low end torque and reasonable sound.
Starting Point: 2003 88ci. FLSTCi.
The Changes: SE Air intake with K&N Filter, Power Commander III tuned by the dealer, SuperTrapp 2:1 with 23 discs. SE 204 cam, with upgraded cam plate and SE oil pump.
Not Changed: No head work, stock push rods, stock lifters, stock valves, stock bore & stroke.
The Results:
Max torque 88 @ 2700
Max HP 81 @ 5450
My goal was a broad and smooth power curve. Lots of low end torque and reasonable sound.
Starting Point: 2003 88ci. FLSTCi.
The Changes: SE Air intake with K&N Filter, Power Commander III tuned by the dealer, SuperTrapp 2:1 with 23 discs. SE 204 cam, with upgraded cam plate and SE oil pump.
Not Changed: No head work, stock push rods, stock lifters, stock valves, stock bore & stroke.
The Results:
Max torque 88 @ 2700
Max HP 81 @ 5450