A dirty over-lay of an FBO FA20 with HKS EL headers (thin red line) and Borla UEL headers (thin blue line) vs FBO K24a2 (thick blue line) with 50° VTC gear and Type-S Oil pump.
Separate Dynos!! Both Dynojets with STD correct and cars running pump gas. Overall trends are more important than raw numbers of course. Again this is just showing
estimated differences.