Originally Posted by
misterandyle
^^as above...i own a em1 and my brother owns a ej8....his is a y4 non vtec with full exhaust, mine is a b16a with vtec, he gets 450km on a good week w/o thrash, i get 500km doing the same both of us keeping it under 3000rpm. Correct me if im wrong but logically the way i see it is with an exhaust more air is allowed to escape quickly from the engine, hence allows more fuel to be eaten, u cant eat more fuel if its full of air...again correct me if im wrong, thats what i've always been lead to believe...