My truck never puked until I started adding chips and tuners, as in the edge and sct. If it were me I would go for a modest Hp upgrade maybe something like 45 or 60 extra hp's and keep the original air filter system /ubbthreads/images/graemlins/rolleyes.gif don't stretch the head bolts and you won't have a problem... /ubbthreads/images/graemlins/crazy.gif