Panhandle Performance

EFI Intake Staging

Stage I Stage I manifolds are designed to take advantage of the flow numbers associated with most "out of the box" cylinder heads. They offer better fuel distribution (especially on nitrous applications) because of the balanced runners. Only the lower manifold is Stage II Stage II manifolds are designed for most ported heads and the higher flowing "out of the box" heads (Canfield, Victor Jr, Track I, etc). The lower is fully ported and balanced with the upper being blended to the lower and matched to your throttle body size. Great for hot naturally aspirated or nitrous and supercharged applications. Stage III Street/Strip and Competition! This is the ultimate cast intake with a fully ported lower and a cut, ported and welded upper (on some applications). The upper has shortened runners and added plenum volume customized to the specific application. You will find these manifolds on many top NMRA and Fun Ford Renegade cars. Note: As a general rule your manifold should flow 10-20% more than your cylinder head at the maximum lift of your camshaft.