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i have a pro x 440 with a xc 700 ves engine in it and i was wondering if i put some k&n air filters on it would i have to rejet if so list jetying size please and also i have a straight pipe that i made to fit where the silencer goes and i was wondering if that would fry the engine or not thanks
 

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Running Different filters you will have to rejet. You will be drawing more air, but the air is a lot warmer than the outside air you are drawing now. So you will most likely loose power.

Why would you want to run a straigt pipe? I thought I saw that you already have an SLP rumblepack. I would stick with that, a straight pipe will be obnoxiously loud, plus I tried it on mine, only for a short time. WAY TO LOUD and didnt create enough back pressure to open the VES. So stick with what you have.
 
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