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Discussion Starter #1
whats the stock hp rating for an 02 raptor? and what gains can i expect from a hmf slip on, jet kit, air filter with lid removed?
 

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I believe stock hp was 33 or so. I think the above mods would give around 4-6 hp. the real gains will come when you change the piston and cam and head porting does a world of difference
 

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ive heard anywhere from 33 to 37 or so. i just like the number 33 cause it makes what i have done to mine even more badass sounding
 

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Well I had mine dyno'd and it was 32 at the back tires, then I did the duals, and proflow with lid off and hit 43 at the rear.
 

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I have read around 33 on stock power and you should pick up about 3 or 4 extra on the mods
 

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32 is a good base line to expect but i have heard as high as 35

get a full pipe and it will make those mods worth your while

but the mod that woke my bike up was the cam
 

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Discussion Starter #9
hmm i was hoping the 3 mod would put me at atleast 40hp. guess its time for a cam then
 

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One dyno will always read different than the other, it just depends on the correction factors applied by the operator. I say 35-36 rwhp is a good average stock. With the right pipe, you can gain 10+ rwhp with the big 3.
 
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