MACE-VCM OTR COLD AIR INTAKE, MANIFOLD INSULATORS

You would get more top end with the MACE-VCM OTR over the ORSSOM OTR, plus stronger bottom end torque with MACE-VCM OTR due to the included manifold insulator. In saying this though, you can always install a manifold insulator with an ORSSOM OTR if you wanted to.