I have a 07 camry ce with just over 30k. Just recently i noticed a decreace in power when i accelerate. the car used to be peppy but it lags out, even the dohc wont kick in too. any input would be gut

spark plugs. life of those plugs are probably 30k miles. check your owners manual to see if thats the case.

my freind had the exact same problem in his 200SX, including reduced fuel economy and turned out to be a cloggled catalytic converter. A plug in the exhaust system is a good bet

do a lil tune up bro....change oil, clean injectors, if u have platinum plugs take them out and clean them......btw its only doing 30k the converter wouldnt be clogged so soon

if you havent found the answer to your problem maybe this will help you. I work for toyota, just yesterday i had a car in the shop with a similar problem. when accelerating from a stop it hesitated. There's a calibration update for the computer wich will correct that problem. if its still under 36l you can take to dealership and is warranty.