power increase
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Stage I
Joined: Mar 2014
Posts: 1
Likes: 0
From: Montreal Que. Canada
power increase
Can anyone tell me how much more power you get from a stage1 on a 103ci. Horsepower and torque. Please
Hi guys. Sorry I forgot to intro. Just bought a dyna fatbob 2012 with 3000 km on it. Should be taking it out mid to late April. Can't wait for this winter to be over.
Hi guys. Sorry I forgot to intro. Just bought a dyna fatbob 2012 with 3000 km on it. Should be taking it out mid to late April. Can't wait for this winter to be over.
Last edited by ChickinOnaChain; Mar 20, 2014 at 09:34 PM.
I would say less than you would think. In reality I would say 7 is doing good. In fact a stock 103 with a nice pipe, tuner, and a/c I would expect 10% increase maybe more with the perfect tune. I haven't had my breakout dynode yet but I do have a d and d 2 into 1, powervision pv 2 with a map from fuelmoto, and a fuelmoto a/c. The bike runs a lot better and cooler, but don't expect huge numbers without cams at least and probably some headwork and a bump in compression if your cam choice needs it. Real horsepower and torque isn't cheap! just my opinion I am not a builder.....
Road Warrior
Joined: Apr 2010
Posts: 1,739
Likes: 10
From: Suffolk, England
Yup, about 10% across the range.
So from about 68HP peak to about 75HP peak.
Some people claim silly numbers beyond this but that's usually just BS from the guy doing the tuning or the owner.
So from about 68HP peak to about 75HP peak.
Some people claim silly numbers beyond this but that's usually just BS from the guy doing the tuning or the owner.
Novice
Joined: Mar 2013
Posts: 20
Likes: 0
From: knox county maine
i have a 2013 fat bob. d&d fat cat, se heavy breather and se race tuner was never dyno tuned just downloaded the map for the above mods. put on dyno for a shoot out just to see what it was at and came in at 77hp 94tq if i can figure out how to upload a pic ill post my sheet tonight
Outstanding HDF Member
Joined: Aug 2011
Posts: 2,325
Likes: 7
From: SE Illinois
You can roughly expect about an 8-10hp and 8-10tq increase with a stage one....opening up the breather, different exhaust and a good tuner/tune.
If you go with a 2-1 exhaust system it will be more. IMO opinion, choosing the right exhaust system is the most important decision performance wise you can make, regardless of your other mods. Whether you like them or not, you're not going to realize the full potential of any mods you do unless you have a good 2-1 system. Looks & sound are personal preferences, but there's no denying the performance benefits of a 2-1 system.
If you go with a 2-1 exhaust system it will be more. IMO opinion, choosing the right exhaust system is the most important decision performance wise you can make, regardless of your other mods. Whether you like them or not, you're not going to realize the full potential of any mods you do unless you have a good 2-1 system. Looks & sound are personal preferences, but there's no denying the performance benefits of a 2-1 system.
Seasoned HDF Member
Joined: Jul 2008
Posts: 9,278
Likes: 1,138
From: southeast PA
Those numbers may not seem high enough to you, but don't forget you're also adding a lot more response and rideability to the bike. It will make a real noticeable difference to how the bike feels.
If you're looking for numbers to brag about, you'll need to take the next step to cams, headwork and a good tuner/dyno.
If you're looking for numbers to brag about, you'll need to take the next step to cams, headwork and a good tuner/dyno.
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Seasoned HDF Member
Joined: Apr 2013
Posts: 32,851
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From: Newcastle, OK
`Don`t have any numbers to show, but my sig bike has 2 into 1 along with it being a CVO, and I can`t see any difference in the way it feels power wise to the bike I traded for it (`09 Dyna SG 96"with stage 1 V & H 2 into 2 and S & S dual cone high flow A/C ).
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Road Master
Joined: Mar 2013
Posts: 1,040
Likes: 0
From: Indiana
I have a nephew that runs the Dyno at a good size H-D Dealer . He has told me many times the Dyno sheet will show a good horse power gain (it better) even if it is totally stock before and after . He was told people pay for numbers so give them big numbers .
It really is a matter of which A/C you use, which exhaust, and the tune.
If you are looking for peak horsepower, that is pretty easy to get a 10 HP increase...and if you are drag racing, this has value.
But for day to day riding, torque is what you feel, and getting the best torque over the 2500-4500 rpm band will make more difference than any top numbers.
Here's an example-
The following chart shows that there was about a 10% increase is max torque. However, in the RPM range that we do most of our riding in, there was a 16% increase in torque.
If you are looking for peak horsepower, that is pretty easy to get a 10 HP increase...and if you are drag racing, this has value.
But for day to day riding, torque is what you feel, and getting the best torque over the 2500-4500 rpm band will make more difference than any top numbers.
Here's an example-
The following chart shows that there was about a 10% increase is max torque. However, in the RPM range that we do most of our riding in, there was a 16% increase in torque.
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Last edited by DK Custom; Mar 21, 2014 at 03:54 PM.