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So I just got a 2005 VTX 1300 R and I would like it to be a little bit louder than it is now, which is just stock. I don't want to be Annoyingly loud But I do wanna be loud enough to be safe. I am looking at slip ons and my thought is well if I'm gonna have tune the bike anyway I might as well upgrade the air intake also. I don't think hyper chargers the way I wanna go just because it sticks out so far and I wanna be comfortable, but I really have no idea which direction I wanna go for the air intake. So if you happen to have some recommendations that include the why you think your recommendation is a better thing to use I would appreciate it. I'm not really looking for "dude use this because your bike will B the poop!" I wanna know why it would be better. Thanks.
 

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If all you do is put on new pipes, slip ons, or drill out the existing pipes, there is no need for additional tuning. Of course, a stock VTX1300 needs the carb tuned so perhaps a better thing to say is: if you only change the pipes, there in no more need to tune the carb than there was before the pipes were changed.
 

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2009 VTX 1300R, Long Island NY
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My setup and dyno tuning. There are several things involved in changing the air intake. If you go too aggressive, you will need both a good jet kit (factory pro) with extra jets, and glen's garage permanent AF screw.



Specs, Dyno numbers:
 
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I would argue that a properly running VTX1300 needs an air filter with more flow, an airbox that allows more air to enter (decapped, snorkel removal, hole in cover with a decorative inlay, etc.), modified pipes (new or Clayton mod which involves drilling holes in the end plate/baffles of the stock pipes), a Factory Pro jet kit, Glen's permanent A/F screw, and tuning of the carb. I do not believe that dynotuning is necessary or even cost effective for most people. Simply following the carb tuning instructions on this forum will suffice and will achieve increased power, better fuel mileage, easier starts especially when bike is cold, smoother running, and less backfiring and decel popping.
 

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The carb tuning guide is a good option to get it as close as possible to a working tune.

If you are like me, who likes to chase down precise and have data to back it up, a dyno tune is another option. As Vinish said it is not necessary if you aren't into the details. I am, and I spent about $350 getting it tuned by a guy who is a carb specialist (has been doing dyno tunes from way before fuel injection was standard on most bikes). I would do it again (this is my second bike he has tuned). At any point in the RPM range, my bike is perfect.

It is your time and money, you have to decide what is important to you.
 
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