W2 intake manifolds pics
Glad you posted the underside pic. Look at how abrupt the flow path is on #4 and #7.
I used this intake for development of my 2010 EMC W2/367. Incredibly capable manifold. First pull made 511 HP @ 6700 rpm and about 475 tq. Thought for sure a modified Weiand Stealth (I love that manifold) with its larger and gently sweeping runners and plenum height would have kicked the M1 dual's ***. It did not. It lost power everywhere except the last 300 rpm--made 514 HP @ 6700 rpm and 460 tq. Modified a RPM-Air-gap as a last ditch effort and with a very roughed in W2 port shape it killed everything with 531HP and 499 ft/lbs.
M1 is a great W2 street intake, I would not hesitate to use one. It does not hamper high RPM/ power production one IOTA. How it does this I have NO idea. If a person is up for a ton of work then grab an RPM and get busy--that manifold just seems to be the best of ALL worlds-almost all of the time. J.Rob
