Found an interesting test on intake manifolds.
Found an interesting test on intake manifolds.
I was just looking around and found this. It is a test of 6 aftermarket and the stock intake manifold for a DSM. Now, while I do realise that the head on the Evo is different from a DSM, the basic archetrecture and ideas apply. I am not trying to say that this information is interchangable, just some good data.
http://www.jayntguru.com/nabr/shootout/
How much does a sheet metal manifold really help on a daily driven Evo that is not out to be the fastest? Look at the flow data for the stock DSM manifold compared to the aftermarkets below 6600 RPM's, and from what I understand the Evo manifold is an even better design. While the aftermarket manifolds may have it on the extreme top end, and I am sure the difference would be exagerated by a larger turbo, for an every day driving Evo where torque and low end responce matter......I just don't know. A nice big aftermarket sheet metal bling intake manifold would look pimp, but the stock one may out performe it when you are sticking with the stock size or similar turbo, then again some of the aftermarket manifolds were a lot faster to spool.
http://www.jayntguru.com/nabr/shootout/
How much does a sheet metal manifold really help on a daily driven Evo that is not out to be the fastest? Look at the flow data for the stock DSM manifold compared to the aftermarkets below 6600 RPM's, and from what I understand the Evo manifold is an even better design. While the aftermarket manifolds may have it on the extreme top end, and I am sure the difference would be exagerated by a larger turbo, for an every day driving Evo where torque and low end responce matter......I just don't know. A nice big aftermarket sheet metal bling intake manifold would look pimp, but the stock one may out performe it when you are sticking with the stock size or similar turbo, then again some of the aftermarket manifolds were a lot faster to spool.
