Take two intakes; manifold number 1 makes 10 more HP at WOT and 3000 RPM than manifold number 2. But, if I tested at half throttle, manifold number 2 makes 10 more HP than manifold number 1.
It seems fairly obvious that if you just give the engine with manifold number 1 more throttle, it would eventually make more power at the engine speed of interest than manifold number 2. So, are you testing efficiency by running a half throttle test? Or throttle response?
I'm still not clear on the value of this test, unless it relates to driveability. Clearly, the manifold with the higher peak torque or HP at the RPM of interest can always make more power than the other manifold, if it is simply given more throttle opening.
Jay Brown
1968 Shelby GT 500 Convertible, all aluminum 489" 1030 HP Supercharged FE
1969 XL Convertible, 460
1969 R code Mach 1, 706 HP 511" all aluminum FE, 10.457 @ 127.47, 2005 Drag Week Winner, Naturally Aspirated Big Block
