it is absolutely LEGAL to have a higher liter over stock, as long as the engine is the same year or newer , and all the smog hoses,etc, are hooked up correctly , and your ecu is from the same year of your engine, and your engine is NOT JDM

JDM engine will not pass visual smog check= illegal to drive in california.......you lucky bastards that dont live in california can get away with having a jdm engine only because your laws are different than ours.....if it werent for the girls here in cali.. id move to oregon and hybrid away.... ok getting off subject here....

reason being the jdm codes are not logged in the computer database and never will be. only engines that are logged in the computer are usdm...... dont be fooled by those liars on Honda-tech about you can legalize a jdm engine in calif. you can not.....

the only other way to have a jdm, car legal in california is if its over 25 years old or you have a skyline bought through Motorex.....

end of story... so go have fun......