So, I'm getting ready to install my built motor with my vortech supercharger. I've dropped the pulley down to a 2.62. I'm wondering if I should change out my plenum spacer and MREV2, to a Cosworth intake manifold. I know there have been dyne tests done comparing the two, however I've only been able to find the comparisons involving N/A applications. If anyone can help me figure my dilemma out, it would be greatly appreciated. If anyone sides with Motordyne, would you also recommend changing out the upper manifold, and if so, which one.

Thanks

head over to my350z.com. IIRC, there are 2 or 3 threads with dynos comparing the cosworth to OEM plenum + spacer.

From what I know of. On a NA car the mrev + spacer for a 6mt is good. BUT on a NA with a cosworth. Its not worth it BUT on a FI car. Its the way to gooo.

The MREV2/spacer combo you currently have will significantly outperform the other setup.

If you happen to get one do a same day pre/post dyno comparison... then post your results here.