RX-7 ITB flanges
 

http://forums.pelicanparts.com/uploa...1223493027.jpg

Here are prototype flanges for that I cut over the weekend for the Mazda RX-7 FC. The section between The flat section between the two middle ports will be knife-edged, three tubes formed to ovals at one end will be pressed and welded into the flange, and mated to three ITBs. A custom plenum will send the boosted air into the horns and BANG! Gobs of horsepower over the stock restictive manifold.