camshaft profiling... another term like V-tec,VVTI...DVVT... eg. bt dnt seem 2 feel any pulling. LOL..
u were asking abt campro engine,n is it a good engine... mmmm,share wit u a story.. fren driving a waja campro, mods- powerzone extractor,powerzone adjustable campulley, sard fuel reg,mythlogy crankpulley,apexi air intake, denso iridium spark plug,apexi N1 exhaust,... not much mods, but compare 2 my engine, 4G91, only change powerzone extractor.. i still beat him in a race.. hahahahaa.. only overtook me after i max at 180kmph, speedlimiter... darn..but he tol me he has reach till 213kmph b4.. jst sharing,so u can b d judge of d engine.