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Fuel Pak a necessity?

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Old Mar 21, 2016 | 09:38 PM
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Default Fuel Pak a necessity?

I recently purchased the Vance and Hines Super Radius exhaust system for my 2016 Road Glide. I'm not sure what type of tuning I want to go with yet. How crucial is it that I get it flashed/tuned before riding? In the past, my bikes already came with exhaust and I never thought too much of what the previous owner had done.

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Old Mar 21, 2016 | 10:09 PM
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You don't need any tuner if all you did was change exhaust. You only need a tuner if you also changed the intake. If you did that, more air will enter the engine and flow through, requiring a tuner. If you didn't, the same amount of air is going through, thus your air/fuel mixture is the same, and you don't need a tuner.
 

Last edited by scooper321; Mar 21, 2016 at 10:44 PM.
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Old Mar 21, 2016 | 10:10 PM
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*is (not if)
 
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Old Mar 21, 2016 | 10:13 PM
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Its not crucial. A lot of people change their exhaust and ride 10s of thousands of miles with no issues. You will be fine until you decide what tuner to get.
 
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Old Mar 21, 2016 | 10:17 PM
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I bought a V&H Big Radius exhaust for my 2005 Dyna. I didn't change the intake and didn't get the engine tuned. A few months later, I lost a cylinder. Turns out that I had a hole burn into one of the exhaust valves. I'd recommend getting a tuner of some type. It's less expensive than the replacement exhaust valve.
 
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Old Mar 22, 2016 | 06:15 AM
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Originally Posted by scooper321
You don't need any tuner if all you did was change exhaust. You only need a tuner if you also changed the intake. If you did that, more air will enter the engine and flow through, requiring a tuner. If you didn't, the same amount of air is going through, thus your air/fuel mixture is the same, and you don't need a tuner.
I am not so sure about that with the new intakes. With the older football ones they were sealed up pretty good. The new ones are open and pretty free flowing. The headers he switched to are very open and free flowing over what most of us run with a 2:1:2 or a 2:1.

I don't think the OP will blow anything up by not adding one but it probably wont run like it should. I would just get the power vision from fuel moto and flash it.
 

Last edited by todd-67; Mar 22, 2016 at 06:17 AM.
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Old Mar 22, 2016 | 06:33 AM
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I would guess by riding it you will know. They are lean from the factory. If it feels really hot or you get crazy deceleration popping, that would make me get something. If you're not hot rodding it you won't hurt it anyway.
 
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Old Mar 22, 2016 | 07:22 AM
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I would say you should complete the stage 1 kit to be on the safe side. I worked at a dealership for three years and did see a few bikes come in that had run lean for a really long time and needed some engine work as a result. The bike will try to compensate for any change and it may over compensate and run extra, extra, lean and hot.

It may not as well, I wouldn't risk it.
 
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Old Mar 22, 2016 | 08:49 AM
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I agree that with those pipes, I'd definitely get a tuner since they flow so free. Stock, these bikes run very lean and can benefit from a tuner even if leaving the stock exhaust on. The Vance & Hines FP3 has worked flawlessly on my bike and considering that you have their pipes, you know it's been dyno'd and tested with that combo.
Wait until SafteyMan chimes in and read what he says and take his advice.
 
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Old Mar 22, 2016 | 09:13 AM
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The best mod anyone can can do on any Harley injected bike is a proper tune. Add performance mods and a proper tune becomes mandatory! Contrary to popular belief, Harley's electronics has no way of knowing changes were made or any good way to compensate for them. The stock tune does not "adjust" or change by itself... But hey as long as it sounds kewl right...
 
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