Got the 48 Back after dyno
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Elite HDF Member
Joined: Nov 2012
Posts: 4,337
Likes: 9
From: Phoenix, AZ
Got the 48 Back after dyno
Yeah I got my bike back and it is running extremely well, the Mechanic told me he installed the Power Commander V with a Map that PVC furnished but he said he didn't like the way the bike performed with that Map and being that the bike is a 2013 he was somewhat limited to current Maps so he basically made his own Map for the bike.
The end result was he was able to achieve 71.34 Horsepower off the rear wheel (which he said was excellent for a 1200)? He also explained a lot of other things that he seemed to be very happy about but I really had no real understanding of most of it. Overall, the bike is running cooler and it seems to have more torque than before, it defiantly is quicker, throttle responseis much better and it seems like I do not need to turn the throttle as much to gain the speed I want as before.
He said the only thing he would suggest for a down the road improvement would be to upgrade the cams he said it would allow the bike to run far better in the low and high range, he doesn't feel head work would be necessary or needed.
Anyone care to let me know if the 71.34 on rear wheel is as good as he said??
The end result was he was able to achieve 71.34 Horsepower off the rear wheel (which he said was excellent for a 1200)? He also explained a lot of other things that he seemed to be very happy about but I really had no real understanding of most of it. Overall, the bike is running cooler and it seems to have more torque than before, it defiantly is quicker, throttle responseis much better and it seems like I do not need to turn the throttle as much to gain the speed I want as before.
He said the only thing he would suggest for a down the road improvement would be to upgrade the cams he said it would allow the bike to run far better in the low and high range, he doesn't feel head work would be necessary or needed.
Anyone care to let me know if the 71.34 on rear wheel is as good as he said??
Road Master
Joined: Jul 2011
Posts: 1,030
Likes: 65
From: Calgary AB
I'd say very respectable numbers. Nice torque too.
Thing about dynos, it's a good idea to go back to the same dyno when you make changes. Don't try to chase someone else's dyno numbers, they are irrelevant.
And I'd suggest, unless you really want to drop the $, don't start on the dyno HP chase.
Thing about dynos, it's a good idea to go back to the same dyno when you make changes. Don't try to chase someone else's dyno numbers, they are irrelevant.
And I'd suggest, unless you really want to drop the $, don't start on the dyno HP chase.
Road Warrior
Joined: Feb 2009
Posts: 1,727
Likes: 11
From: TN
Hp is low. Mine dynoed 79.5 at Stage 1 and I have seen some in the 80s.
Question, does the PC reset the rev limiter through the ignition? With the SEProST the limiter is set at 7000 which will get more ponies.
Bwana
Question, does the PC reset the rev limiter through the ignition? With the SEProST the limiter is set at 7000 which will get more ponies.
Bwana
Seasoned HDF Member
Joined: Feb 2007
Posts: 5,067
Likes: 394
From: Edmonton Alberta Canada
Mine still cuts out at 6000, it may be possible but I'm not sure as I have never hooked mine up to the computer.
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Elite HDF Member
Joined: Nov 2012
Posts: 4,337
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From: Phoenix, AZ
I have to question those numbers, my neighbor had his dyno'ed and he has got a 2012 Street glide with a 103ci motor he has V&H Duals, a Roland Sands High air flow Breather and the PowerCommander V and his dyno'd at 80.00HP and 102.86 torque. So you want me to believe that your sportster did 79.5Hp with just a stage 1???
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Road Master
Joined: Feb 2010
Posts: 933
Likes: 7
I have to question those numbers, my neighbor had his dyno'ed and he has got a 2012 Street glide with a 103ci motor he has V&H Duals, a Roland Sands High air flow Breather and the PowerCommander V and his dyno'd at 80.00HP and 102.86 torque. So you want me to believe that your sportster did 79.5Hp with just a stage 1???
If you have aftermarket pipe & air cleaner then by most dyno's your numbers are low. Should be between 75-80. Made made 75 with the bad performing VH short shots.
What's with the whole stage 1 or 2 or whatever thing. That's just goofy talk, what exactly would a "stage 1" be or "stage 2" or what ever. I hear thus all the time & it really gets annoying. Kind of like back years ago with the 3/4 race cam.
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Road Warrior
Joined: Feb 2009
Posts: 1,727
Likes: 11
From: TN
To answer questions/questioning from 5151 and grancuda.
BTs vs Sportster engines is truely apples vs oranges. The BT is a torque engine, and the Sportster is not. The Sportster is a short stroke with a very small crankshaft. This means less torque and higher rpm. Next, add a tuner, such as the SEPST which I use, that allows higher rev limiter (7000 vs 6200) and you get additional ponies. My 1200 was dynoed twice as a Stage 1 and pulled 79.5 hp and 78.7 hp. I have since done an engine build, see 100 hp,...not quite in the Sportster, and have 98 hp.
Stages, this is not scientific or in the congressional record, but...
Stage 1 - hi flow air cleaner, free flow exhaust and either rejetting the carb or a tuner for FI models
Stage 2 - the above plus a better performing cam
Stage 3 - the above plus better performing (hi comp) pistons
Stage 4 - the above plus "head" work, porting/polishing ect.
hope this helps
Bwana
BTs vs Sportster engines is truely apples vs oranges. The BT is a torque engine, and the Sportster is not. The Sportster is a short stroke with a very small crankshaft. This means less torque and higher rpm. Next, add a tuner, such as the SEPST which I use, that allows higher rev limiter (7000 vs 6200) and you get additional ponies. My 1200 was dynoed twice as a Stage 1 and pulled 79.5 hp and 78.7 hp. I have since done an engine build, see 100 hp,...not quite in the Sportster, and have 98 hp.
Stages, this is not scientific or in the congressional record, but...
Stage 1 - hi flow air cleaner, free flow exhaust and either rejetting the carb or a tuner for FI models
Stage 2 - the above plus a better performing cam
Stage 3 - the above plus better performing (hi comp) pistons
Stage 4 - the above plus "head" work, porting/polishing ect.
hope this helps
Bwana
Road Master
Joined: Feb 2010
Posts: 933
Likes: 7
The "stage x" after that explanation still goofy.
So what would pipes, air cleaner & free flowing heads be? Would I take Stage 1 add the Stage 4 & divide by 2 to get the average? So like a Stage 2.5?
What about my Vance & Hines Short Shots which are not good powerful pipes, when I upgrade to a stepped 2 into 1 pipe, will I bump up from a Stage 1 to a Stage 2 or am i at Stage 0.5 & with the 2 into 1 I will be at a ful Stage 1? Keep in mind I just put a non-filtered velocity stack on so maybe that increase will go ahead & bump the 2 into 1 up to a full Stage 2?
What "stage" does one increase displacement, "Stage V". What about clutch upgrades or better intake(actual intake, between carb & heads, not intake like A/C)
So what would pipes, air cleaner & free flowing heads be? Would I take Stage 1 add the Stage 4 & divide by 2 to get the average? So like a Stage 2.5?
What about my Vance & Hines Short Shots which are not good powerful pipes, when I upgrade to a stepped 2 into 1 pipe, will I bump up from a Stage 1 to a Stage 2 or am i at Stage 0.5 & with the 2 into 1 I will be at a ful Stage 1? Keep in mind I just put a non-filtered velocity stack on so maybe that increase will go ahead & bump the 2 into 1 up to a full Stage 2?
What "stage" does one increase displacement, "Stage V". What about clutch upgrades or better intake(actual intake, between carb & heads, not intake like A/C)