Custom ported and CNC throttle bodies, upper and lower manifolds by Synergy Composite

secondnissan

These gains seem right on to me. The z1 manifold picked up about 11 hp peak over the m370. The m370 loses about 7 hp over the stock manifold on a full bolt on car. So lets say z1 picks up 4 over stock, and syn picked up 6 on a hfc car, which is great considering the z1 car had headers. Its just a ported intake, don't expect miracles , if you want the last little bit out of these cars this is a no brained. People spend more for an m370 to loose peak power. Oh I forgot m370 makes more under the curve, which doesn't matter after 1st gear.