10.25 : piston questions

i know this is a honda forum but i had a few questions and was hoping someone could help me, after all i am 2/3 honda(97' recon / 69' cb 350 ). i am pre-paring to do a top end rebuild on my 99' yamaha warrior 350 and plan to bore it .020 over and drop in a wiseco 10.25:1 high compression piston. stock compression is 9.1:1, i was curious if i could get away with running 92 or 93 octane without it knocking and also if it would be okay to add a table spoon or two of octane booster to every tank of fuel. i am also wondering if i need to re-jet to accomidate the new bore job and high compression piston? any and all feedback is greatly appreciated, thanks in advance for any replys.
mike

[kicken250x]

na im running a 13:1 im my X with no detination or anything on 94 octain and no i dont thing you will need yo re jet unless you get a cam could be wrong

can't anyone else please help me, somone at bluetraxx told me i would need to re-jet, is this true?

[spliffy]

You Will Be Fine Running Pump Gas At That Compression... When You Get Over 11:1 You Need To Start Worrying About Using Race Gas Or Octane Boost, & Yes More Than Likely You Will Have To Rejet It , Probally Just Up a Size Or 2 On The Main Is All Though.