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Old 09-27-2010, 10:40 PM   #1
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whats the best exhaust for hp gains?

I just bought my 2008 vrod and what to get the biggest gains when i buy my exhaust. i dont care about how loud they are or what they look like. I am sure this question has been asked alot. but I am new on here and could only find opinions.
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Old 09-27-2010, 11:31 PM   #2
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Stock.
Everyone talks about horsepower gains from pipes and a tune, then they attribute the gain to the pipe. Everything I've ever seen points to the gain coming from the tune.

The only thing I've ever seen that could be considered a semi-valid test were a few people here that were at a dyno shootout. Two or three posted, and they said the bikes with stock pipes made the most horsepower.

With that said, the 2 into 2 pipes kill horsepower. Beyond that, buy whatever you like.

The reality is that there isn't much you can do to get more out of a V-Rod. A good tune helps a lot, beyond that, cams will get you another 10 to 15 ponys. If you want big horsepower you need to go big bore or forced induction.
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Old 09-28-2010, 12:27 AM   #3
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What cams, what do they cost, what do they do to the gas mileage .. and how do they sound?
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Old 09-28-2010, 08:51 AM   #4
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Originally Posted by AndyV View Post
What cams, what do they cost, what do they do to the gas mileage .. and how do they sound?
Screaming eagle cams from Harley. I don't know much about them, though several people here run them. The high performance section would be the place to start looking for info.
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Old 09-28-2010, 08:58 AM   #5
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Seems a lot of hp for a set of cams.
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Old 09-28-2010, 10:20 PM   #6
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thanks for the input. this is my first harley so i did not know which direction to go. i defintly need pipes on this bike though. my bike sounds like a prius. ha ha. its just sad. i have the vance and hines fuel pak already. picked it up from a friend cheap. i was thinking about running the vance and hines competition exhaust. does anyone know of some one running this exhaust, and how did they like it.
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Old 09-28-2010, 10:43 PM   #7
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Seems a lot of hp for a set of cams.
I wouldn't know what to expect out of new cams, so I can't really comment. There are two or three threads here about them though, I believe someone even posted a dyno sheet.
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Old 09-28-2010, 11:29 PM   #8
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Originally Posted by 105th View Post
thanks for the input. this is my first harley so i did not know which direction to go. i defintly need pipes on this bike though. my bike sounds like a prius. ha ha. its just sad. i have the vance and hines fuel pak already. picked it up from a friend cheap. i was thinking about running the vance and hines competition exhaust. does anyone know of some one running this exhaust, and how did they like it.
I have the double barrel slip ons, they came with the bike, they definitely sound throaty but I like the looks of the 2 -1.
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Old 09-29-2010, 12:34 AM   #9
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I have the Vance n Hines Competition Series on my 02 vrsca and wow what a sweet sound and also a nice gain in horsepower. About 15 hp on dyno. They are so nice. Get em brother. You will like severely.
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Old 09-29-2010, 04:28 PM   #10
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What cams, what do they cost, what do they do to the gas mileage .. and how do they sound?
If you're worried about gas mileage, you better leave the bike stock. Any cams, pipe and tuner you add is going to decrease your mileage anyway because you'll be riding more aggressively enjoying it.
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Old 09-29-2010, 04:34 PM   #11
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The best exhaust for HP would be the one made by Trask
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Old 09-29-2010, 04:39 PM   #12
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The best exhaust for HP would be the one made by Trask
But I get lousy gas mileage, rear tire life, and don't know why?
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Old 09-29-2010, 05:07 PM   #13
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Originally Posted by LL Cool K View Post
If you're worried about gas mileage, you better leave the bike stock. Any cams, pipe and tuner you add is going to decrease your mileage anyway because you'll be riding more aggressively enjoying it.
Hey, LL Cool, I'm not worried just curious. On my twin cam just about everything you do 'costs' about 5 mpg.
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Old 09-29-2010, 07:21 PM   #14
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I get 31 or 32 in mixed city driving, 34-36 on the xway if I behave myself.
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Old 09-29-2010, 07:48 PM   #15
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I get 31 or 32 in mixed city driving, 34-36 on the xway if I behave myself.
Behave yourself, on a v-rod?? Kind of an oxymoron, isn't it
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