General Slant 6 Input Required

EGR is transparent to almost all users. Its OFF at idle, OFF at WOT and only on at cruise when you dont even know its doing anything. It keeps your chamber temp cool enough to retard NOX formation, thats it. Supposed to add torque/raise compression too as the inert recirculated gas in the chamber is only a filler, ie its not used for combustion. Ditch everything else! On a slant its not that hideous. Keep manifold heat! shave the head.090 enlarge the head pipe to 2.5, headers are well, headers. Manifold works up to your cam.