Dyno question
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Road Captain
Joined: Oct 2007
Posts: 743
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From: Morris, Il
Dyno question
I had a 103 installed with head work and cams. Had it dynoed they said 2 hrs. Charged $350. My question is, is this a good amount of time for full map tune. I read on HQ web site that a 2 hr tune is nor enough time. I feel I can get more them 108 tq and 96 hp. Indy that did work was expecting 106 hp and 115 tq or close to it. Any thoughts!
Thanks
Thanks
Elite HDF Member
Joined: Mar 2006
Posts: 4,722
Likes: 5
From: Biddeford, Maine
To do a full tune, it takes a lot longer then 2 hours.
A good tune hits every throttle position and every load for each cylinder, then goes back over them for timing as well. It can take 8 hours or more to get a good complete tune, and that is what is going to cost you around $400 or so.
Steve
A good tune hits every throttle position and every load for each cylinder, then goes back over them for timing as well. It can take 8 hours or more to get a good complete tune, and that is what is going to cost you around $400 or so.
Steve
It's hard saying. What kind of tuner are you using? Power Commander? SERT? SEST? It depends on how close the MAP they started with is. If they had a MAP already tuned for a bike with your build then the tune wouldn't take as long.
Ultimate HDF Member
Joined: Dec 2006
Posts: 8,294
Likes: 33
From: Po-Dunk Looziana
TO ME, you are not that far off with those numbers. The true duals will keep the TQ lower than anticipated, it's the HP that seems just a little low since you had some headwork. I'd figure your HP would break 100hp if the headwork job was done correctly. And of course there is always the issue of the tune being off.
The REAL question is:
How does it ride?
The REAL question is:
How does it ride?
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Road Warrior
Joined: Aug 2008
Posts: 1,474
Likes: 1
From: Acworth, Ga
TO ME, you are not that far off with those numbers. The true duals will keep the TQ lower than anticipated, it's the HP that seems just a little low since you had some headwork. I'd figure your HP would break 100hp if the headwork job was done correctly. And of course there is always the issue of the tune being off.
The REAL question is:
How does it ride?
The REAL question is:
How does it ride?
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Extreme HDF Member
Joined: Apr 2006
Posts: 10,449
Likes: 46
From: Roswell, GA
"Thoughts" about what? Are two hours enough for a "full tune," not unless the dyno tuner has previously tuned bikes with your build as harleytuner and MUC already posted.
Or, are you asking if 96 hp and 108 tq close to the max available at WOT for your build? If that's what you are asking, the hp number seems low as UK mentioned in his post.
If the indy is familiar with the build he installed, presumably he's familiar with the dyno shop(s) that tuned that build and got the numbers he told you. If you want the numbers, consider taking the bike to the shop that got those numbers.
Since you probably spend very little time riding at WOT, you should probably be more concerned with the rideability and mileage of the tune/build. Mileage will be a good indicator of whether you got a good "full tune" as well as smooth throttle response.
Or, are you asking if 96 hp and 108 tq close to the max available at WOT for your build? If that's what you are asking, the hp number seems low as UK mentioned in his post.
If the indy is familiar with the build he installed, presumably he's familiar with the dyno shop(s) that tuned that build and got the numbers he told you. If you want the numbers, consider taking the bike to the shop that got those numbers.
Since you probably spend very little time riding at WOT, you should probably be more concerned with the rideability and mileage of the tune/build. Mileage will be a good indicator of whether you got a good "full tune" as well as smooth throttle response.
Club Member
Joined: Feb 2007
Posts: 5,335
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From: Tidewater
IMO no that is not enough time for a proper tune AND for 2 hours that is crazy...More than my lawyer gets! My last tune cost $480... I took the better part of a whole day spread out over 3 days for cooling and getting engine to proper operating temps. A lot more involved in a tune than spinning it on a dyno and loading a map..It, IMHO, is money well spent...A good tune ain't cheap and a cheap tune ain't good...