my civic wont rev past 3000 rpms...it did this on the 1st motor i put in it which is d15b stock..put the same one in again an it still does it..tried different ecus same problem..when i first bought the car it had a 1.6 vtec in it..and it bogged around 3000 and 4000 rpms but drove fine and went all the way up to like 8000 rpms..so im thinkin its somethin with the car?any ides..lemme know thankss