MSsub22

well i have a 2001 impreza sedan L 2.2 N/A, ive been noticing that when i get to around 3.8-4.6 rpm it hesitates, mainly in 3rd and 4th gear, i have all new spark plugs, and my wires are relativley new, i have an ingen intake and a custom exuast 2 1/4 IN piping, im not sure if maybe one of the 2 is throwing it off, but when i changed out the spark plugs this summer one of them had like this white cystal like build up on it.

hey man whats goin on, dont mean to bother you but im new to this whole forum thing and i saw ur name i figured mab you coulkd help me out?