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Discussion Starter · #1 ·
i have a 05 zx10r motor with 13.5:1 pistons, mild cams is basically all i have done to the motor, compression is gonna be between 13.5-14:1 what fuel should i use? im being told mr12, is it a good safe fuel?
 

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mr12 is usually for stock compression motors. it would probably be fine, but i would recommend some kind of high octance fuel. i would think you would get more out of it. mr12 burns very easily.
 

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13.5 is not that high of comp. mr12 with good tune should be fine if for some reason need more anti knock(octane) mrx01:buttrock:

just saw the 14 to 1 part i would lean towards mrx01:2thumbs:
 
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