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Discussion Starter #1
Hey guys, I have a polaris 500 H.O. engine in my off road buggy. Im at 900 ft elevation. I installed a uni, there is no box its just open. I also installed an HMF pipe/exhaust. the stock main is 155. What jet sizes should i get to get it right? i was thinking of getting some in the 160's range.
 

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Do you know how to read spark plugs? If its mostly black your to rich, if it is mostly white your to lean. If it looks like a good fart stain in your tighty whiteys then hell your just about perfect.
 

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Discussion Starter #4
Thanks guys...yeah I can read plugs but I hate doing it. Haha. I put a 165 in it and it seems great. I know I'm not technically a Polaris owner but thank you for hospitality.
 
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