on two seperate occasions ive seen two civics, both with nice wheels, noisy exhaust ect so im assuming there tuned aswell. both cars have lumpy idle, as if the throttle is been blipped when on a closed throttle. why is this? im assuming its a fucked sensor but wondered, isd this a crappy ''trend' or modification? or just a coincidance that both ponified civics ive seen have the low speed running issue?