why do you guys always pick on each ther on here?
this man is doing mine... a flowbwnch is the only way to go. with hundreds of hours of research going into what sort of porting/texture on the inlet/ex ports. inlet manifold too!
http://www.clubgti.com/forum/showthread.php?t=146976is every head consistently the same when done by hand? of course not. only cnc can do this. but as said, they overinflate their cfm readings. but g-werks use these heads to massive success.
a good head with manifolds blended will cost £750 all day long.
you wont see massive gains without cams. which we all know is a no-no with abf management. the best we can do is use ess_three's research work research
http://www.clubgti.com/forum/showthread.php?t=186393&highlight=16v+tuningi wish i could afford other management. as a set of 268 schricks would be awesome in an abf. also, i would say the figures ess_three gets is due to his amazing head, from the late mr.B