I never heard back from Mike Yoder, so I got a one piece split manifold from someone in IN (cheaper, too). It looks great, but the problem is that he removed the heat riser "flap" and spring. Before I send it back to him, is it necessary to retain that flap and spring? heat will still be getting to the intake manifold (right?), but will it eventually make the intake too hot? This is going on a year-round daily driver so it needs to perform well in 90+ degree weather as well as sub zero weather.
Thanks,
joe
