2015 street bob 103 upgrade help
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5th Gear
Joined: Apr 2022
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From: iowa
yes and I just finally got around to getting cams in. That portion is all done with, now I've just been trying to figure out the whole tuner, dyno portion. Seen many say just a tuner, others say, tuner and dyno. I lack knowledge in that area of what's best
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From: The Republic of Texas
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Joined: Aug 2019
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From: Unreconstructed
IMHO, I wouldn't spend the money on a dyno tune for a stage 2. Get a PowerVision from FuelMoto, use the tune they send you and run auto tune sessions on your own and you'll be very happy.
You can stick with your current exhaust, but swapping to a full replacement (2 -1 particularly) will make better power.
You definitely need a tuner. If it runs on the stock tune it won't run well and could run excessively lean. There's a couple ways you can do this. As already mentioned Fuel Moto (and probably others) will sell you a tuner with a pre-loaded map on it based on your setup. A 103" with 583 cams is probably a fairly common setup so I'd think they'd have a decent map. The other option is buy a tuner and have someone dyno tune it for you. In theory this is the better option as someone is actually monitoring the sensors on your bike and adjusting accordingly instead of just loading something that worked on another similar bike. In the real world on a relatively common setup like yours it might not make much, if any difference. If you are going to change exhaust do that before either the dyno tune or ordering a pre-loaded tune.
If you have a reputable Harley tuner in your area and want the maximum performance from your bike, buy the tuner they recommend and trailer it to them to do the tuning. If not then order a Power Vision from Fuel Moto with a canned tune and you should be good.
You definitely need a tuner. If it runs on the stock tune it won't run well and could run excessively lean. There's a couple ways you can do this. As already mentioned Fuel Moto (and probably others) will sell you a tuner with a pre-loaded map on it based on your setup. A 103" with 583 cams is probably a fairly common setup so I'd think they'd have a decent map. The other option is buy a tuner and have someone dyno tune it for you. In theory this is the better option as someone is actually monitoring the sensors on your bike and adjusting accordingly instead of just loading something that worked on another similar bike. In the real world on a relatively common setup like yours it might not make much, if any difference. If you are going to change exhaust do that before either the dyno tune or ordering a pre-loaded tune.
If you have a reputable Harley tuner in your area and want the maximum performance from your bike, buy the tuner they recommend and trailer it to them to do the tuning. If not then order a Power Vision from Fuel Moto with a canned tune and you should be good.
HDF Community Team
Joined: Aug 2018
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From: New Hampsha
If you order a tuner from Fuel Moto they will provide you with a different tune if and when you do change your exhaust.
HDF Community Team
Joined: Jun 2006
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From: san antonio
Based on the OPs posts, I suggest he find a tuner that sell Power Vision licenses; no need to purchase hardware/software. Licenses go for $150-$250 in my area and a full tune will run $250-$400. I agree that replacing the exhaust system with aftermarket will increase performance and that if the OP wants to change the exhaust, he should do that before the tune. Having said that, for a Stage 1 configuration, with a cam, the motor will probably tune out nicely with the V&H mufflers. JMHO
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HDF Community Team
Joined: Jun 2006
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From: san antonio
Petznick, I see you are a new member and probably have not read the forum rules, one of which you have violated by double posting. Suggest you visit the Welcome area and read the forum rules for future reference. You have a lot more replies on this same titled thread in the Dyna section so the above posters can find your thread there. I don't have the authority to merge this thread with your thread in the Dyna section but have requested another forum member to do that. Anyone following should follow the OPs thread in the Dyna section; not this one.
Last edited by djl; May 19, 2025 at 05:11 PM.
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Joined: Mar 2010
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From: Poolville
I would purchase the Power Vision PV 2-B tuner from Fuel Moto and let them matchA tune for you... You're exhaust will be fine because Your catalytic converters are in the mufflers, so the flow through Vance and Hines slip-ons will work quite well with the OEM head pipes..
With that 583 cam you're corrected compression is going to be 196 PSI so you will definitely need to either get the PV tuner or take it to a reputable tuner and buy the license and have them tune your bike. Myself I would go with Fuel Moto..
With that 583 cam you're corrected compression is going to be 196 PSI so you will definitely need to either get the PV tuner or take it to a reputable tuner and buy the license and have them tune your bike. Myself I would go with Fuel Moto..
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