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Discussion Starter · #1 ·
Hi

is there any difference will be if you just replace the piston to 11.5
 

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Difference as in what? Performance will see a pretty good gain. I love mine. You will need to run a higher octane fuel.
 

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You will see about a 2-3 % gain per full point in compression.....and you will not need any more than premium (91) with 11.5:1.
 

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I just put this piston in. There is some power gain, but I do have to run higher octane gas. I have to run about 94 to 95 octane to get rid of all the pinging here in the midwest.
 
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