MAP's Evo 8 & 9 Exhaust Manifold Testing / Dyno Results

[311evo]

Ported stocker seems like a solid investment of you're on a tight budget. But considering how this manifold spooled and gained up top/mid I would say it's worth every penny.

The construction is amazing, and it quieted down my "tick" as opposed to my former thinner metal manifold. When I checked out the flanges and the ported transitions to the runners it was evident that they put a mind-blowing amount of time and thought into this manifold.