ok.. I havent been using higher octane gas and I should ???

[bbechtel16]

why not go for a 350x stock carb? He could always jet it down some. They are reasonably cheap, and aren't the 250sx carbs the same style as the bigreds? If so, then they are the same style carb as the 350x anyway. With the mods he has, it should help the power a good bit. I say do it! I see carbs go for 30 bucks or less all the time, and if it didn't work good, he could always throw it on ebay.

Oh, and I'd definately NOT be running 87 octane with a 10.5:1 piston. I mean it's only a few cents higher to buy the 93, and it's alot cheaper in the long run when you don't blow your motor LOL, and you're not really going to get the power out of that piston that you ought to be getting with the meager gas!

Thanks for the info man. Here's another one for w/e is listening. I want to take my airbox out of the equation and replace it with a K&N universal cone with one of their precleaner slip cover things on top of it. I have no idea how large of a cone will be big enough that it won't cause any restriction and what size/shape/style would fit the SX well. I am also considering maybe putting a single sheet splash gaurd of sorts under the filter, or possibly 3 sides, any thoughts on if this is nessasary with the precleaner (not sure if its water resistant of not) and/or how to do it?

[ATC crazy]

Try some 100LL gas

[AirManCam]

Are you getting lippy again crazy?