When the K24Z3 was first introduced, many people were disappointed with the integrated exhaust manifold that made conventional “headers” obsolete. This is especially true since the K-Series platform produced some very impressive performance gains with quality headers. When you look at the O.E precat, you can easily tell it was designed to be made cheaply and mass produced. The components are stamped and welded with no consideration for turbulence or restrictions. This combined with 2 catalytic converters causes the engine to be literally choked out of a good amount of power.
RV6® has been manufacturing PCDs® for the V6 Hondas for around 5 years now. Over that time, we have obtained much experience on how to make PCDs® last. PCDs® are subjected to high temperatures and constant stresses from the twisting of the engine which are unlike conventional headers that distribute the stresses between several runners all of the stresses are concentrated on one area.