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Discussion Starter · #1 ·
Whats up Raptor peeps. I just purchased my first quad (2011 Raptor 350). I am an avid sports car and truck enthusiast so I am definitely into modding my toys. Problem is, I have discovered that these quads are very different from what I am used to working on and tuning.

I have an aftermarket air filter and exhaust in mind. But if I do these two mods together, is it neccessary to re-jet it instantly to compensate for added air induction? Or can it wait a few months down the road? I know elevation is a factor as well. I live in southern Louisiana. Any suggestions or ideas? I bought an entry level ATV since its my first, but I already want more power!

Thanks...
 

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You'll like the HMF Competition Series and several others on the Raptor 350. I have tons of favorites, but the Competition series sticks out because of the adjustable sound output endcaps. I'd also go with a Pro Design Foam/K&N Filter for extra power and convenience.

http://www.kbmotorsportsonline.com/exhaust/slip-on/ (Exhaust Link)
http://www.kbmotorsportsonline.com/tuning-management/intake-kits/ (Intake Kits)

You'll need to make jetting adjustments, but sometimes just moving the clip and adding a larger main will put the A/F ratio where it needs to be.
 

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i have hmf& pro design filter kit both very nice do the re-jet right away hard on your engine if you dont it will be lean and you wont get the total performance out of it if you dont do re-jet
 

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Hey man, congrats on the new raptor!! I have same one and bought for a lot of same reasons! I absolutely love mine, although its a entry level machine, it is a load of fun! I have no trouble standing mine up in 2nd and its plenty of power to scoot through the trails, and mud, etc,... I am definitely going to upgrade the intake/exhaust and get her breathing but even stock its a lot of fun! I'm 32 yrs old and been riding dirtbikes and mostly 3 wheelers all my life, and having the suspension and the added power and stability sure makes for some great trail days!
 

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hmf comp, foam clamp on filter kit, air box lid off, 150 main jet and 45 pilot. that should make you happy. feel free to pm me with any questions
 

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Discussion Starter · #6 ·
Thanks a lot for the info guys! So can anyone recommend a jet kit or will the Yamaha GYTR do the trick? Don't they all come with different mains and pilots so it can be tuned precisely based on mods and elevation?
 

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go to your local dealership and pick up a 147.5 150 and 155 main (youll most likely use the 150) and a 45 pilot. jets there will probably be 2 to 5 dollars each
 
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