hiya i got a fiesta si 1.6 zetec with a 2.0l 16v zetc mondeo engine fitted at the mo i put the 1.6 si manifold on it with 2.0l injectors and thouttle body and the si manifold port seem small 4 2.0l engine and must be loseing power cuz of it?? and am tuning it up with cams and that and just wonder with inlet manifold is the best to use on it???? with out going in to marger money like ???? lol please can some one help me please a.s.a.p thanks