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03-12-2009, 09:32 PM
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#1 (permalink)
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Junior Member
Join Date: Feb 2009
Location: Great Falls, MT
Posts: 11
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Do I need a race tuner or not? Have SE heavy breather and 2into1 big Radius
hows everyone doing? I had a question for everyone. I don't know if this is the right place for it. If it isn't please feel free to point me in the right direction.
I just purchased a 09 Fat Bob, rode it for 12 miles then I had back surgery and cant ride for 3 months. So I am getting ready for when I can ride. I just purchased the Vance and Hines big radius 2 into 1 and the Screamin Eagle heavy breather so far. My question is do I really have to get the computer set up and have it dynoed. I really don't want to, but I don't want it to hurt the engine. Does anyone really know if is that big of a deal not to get one? Please let me know. I will take any and all advice. Thanks.
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03-12-2009, 09:38 PM
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#2 (permalink)
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Rapidus Maximus
Join Date: Sep 2008
Posts: 329
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Yes you do! The bike will run too lean without the tuner,and they already run lean from the factory. I recommend the S.E.R.T. or Thundermax.
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03-12-2009, 11:37 PM
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#3 (permalink)
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Junior Member
Join Date: Feb 2009
Location: Great Falls, MT
Posts: 11
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Alright, I was hoping I wouldn't have to do that. But I guess I gotta do what I gotta do. I just hate spending all that money on this. I already spent a grand on just these 2 parts and now have to spend another 700 for the SERT and dyno. Oh well I guess. Thanks for the input.
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03-13-2009, 05:43 AM
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#4 (permalink)
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Mentally unstable.
Join Date: Jun 2008
Location: Pennsyltucky
Posts: 6,627
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The parts you put on are simply noise and bling, without the added fuel to make them function correctly. And yes....you'll harm the engine, because it's running ubber lean. Good luck with the back surgery. Heal up and go enjoy your new bike.
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HERD meber #10
DISCLAIMER: Any information, advice or child raising tips I give on this forum should be taken with a grain of salt, 8 hours sleep and at least 6 beers.
Following my instructions will likely lead to death, mental retardation and/or bodily injury, consistant with eating lead-based paint chips, and by doing so, will release me, my family and my dog from any legal action(s) for listening to anything I recommended. 
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03-13-2009, 06:51 AM
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#5 (permalink)
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Member
Join Date: Jun 2007
Location: Houston
Posts: 58
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I think V&H Make a tuner? If you are using their parts they have premade maps that they will give you.
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RamRod
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03-13-2009, 10:01 AM
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#6 (permalink)
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"Ain't quite right"
Join Date: Dec 2008
Location: Texas
Posts: 3,921
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More air in and out, needs more fuel to match...
__________________
'08 DX:
Mirrors-Reactor Wheels and Pulley- CFR- Grips-Metz 260- Drag Bars-Turn Signal Relocation-Topless
Your thread is boring, let's change the subject...
Quote:
Originally Posted by Rockerbox1
.....Motive we know
he aint quite right.....
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Quote:
Originally Posted by XDixiecratX
Well Motive, stay out of Vegas, cause you aint playin with a full deck.
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03-13-2009, 10:56 AM
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#7 (permalink)
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Senior Member
Join Date: Mar 2009
Location: Below Mason Dixon Line
Posts: 112
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You got a sweet bike, some sweet upgrades, and all cost a pretty penny. Get a tuner, a dyno and get the most out of the bike. You will enjoy it a whole lot more and you won't damage your investment.
__________________
2009 FXDC 
Rinehart Exhaust
Stage 1
Forever Rebel
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03-13-2009, 11:11 AM
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#8 (permalink)
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Old Member
Join Date: Oct 2006
Location: Kelowna,BC
Posts: 1,727
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All you need is a stage1 download from Harley if you don't plan on doing any more upgrades other than pipes and breather. The cost is around 200.
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03-13-2009, 11:31 AM
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#9 (permalink)
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Junior Member
Join Date: Feb 2009
Location: Great Falls, MT
Posts: 11
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Well thanks again for all the input, I figured thats what I have to do. With this sert or PC-V, they can be remapped if I decide to do some other mods then with the engine? Does anyone recommend either one of those tuners? The dealer is telling me the cert is better cause its removable and it changes the ECM directly versus the PC. Just want to find out the real benefits of each. I have been to other forums where they talk about it sometimes. It seems like most are just personal preference. I was just hoping to hear from someone that has experience with both.
Hey thanks again for the input.
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03-13-2009, 11:39 AM
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#10 (permalink)
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COB
Join Date: May 2007
Location: Hillsburrito, Or
Posts: 1,831
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I was told by my mechanic at the dealership that the stock tuner on the 07 (I believe) and above will handle a pipe/air cleaner upgrade without needing a tuner or a map. He is a good mechanic and I believe him.
BUT- I would put a tuner on anyways to get your AFR down to 12 or so which you simply cannot do without it. Otherwise your engine is going to continue to run "Harley Hot".
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Search and ye shall find......the anwer to your exhaust question is in the exhaust forum.....whodda thunk it?
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