hey guys just had a b18c4 fitted in my eg civic its a monster fast as #!#!#!#!#!#! but still want more power as its only a stock motor 168bhp i believe all i have done is added a air filter now where do i go from here? ive been told not to get a 4-2-1 or 4-1 manifold and just change the middle section ive been told that will increase more power hopefully that will be done this week but wat else can i do, cams and ecu remap are on the list but i wana do more to the engine before them, help please