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I have an 05 450r with a fmf full exhaust, header, and jetted. Looking for a some more punch! I am sure most of u are gonna say a cam but which one for bottom end power or should I just get the hrc kit? I also like the sound of the exhaust so I would like to keep it what DO U PEOPLE SUGGEST?
 

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I have an 05 450r with a fmf full exhaust, header, and jetted. Looking for a some more punch! I am sure most of u are gonna say a cam but which one for bottom end power or should I just get the hrc kit? I also like the sound of the exhaust so I would like to keep it what DO U PEOPLE SUGGEST?[/b]
U 4 sure need a cam and I would go with a hotcam stage II. If u have the time and the money do some port work on the head. That will make a huge difference.
 

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I wont recommend the 05HRC cam if you looking for low/mid power......

HCII....or 06HRC cam.... or 02CRF cam.... etc.....

and open your airbox up.......
 

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Discussion Starter #5
I wont recommend the 05HRC cam if you looking for low/mid power......

HCII....or 06HRC cam.... or 02CRF cam.... etc.....

and open your airbox up.......[/b]
New to the quad seen so if u dont mind what exactly comes of the airbox? Just the top lid? and will I have to readjust anyhting after its done?
 

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If you remove the lid, your gona want to bump up the main jet to a 185, you may even be fine since it was rejeted with the exhaust.
 

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Get a newer hrc cam a 05 hrc jet kit and a dasa intake, if that doesnt do the trick for you, wou will want a higher comp piston and a port job.
 

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HCII!!! HUGE DIFFERANCE!!!!!! that and no lid, with proper jettin, you will be very happy!! If not. well.. Maybe even a 12:1 piston if ya got the $$, dont go 11:1 you wont notice very mutch.
 

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Early HRC cam and higher comp piston :yes
 
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