QUOTE(sphiroth @ Apr 8 2008, 01:34 PM)
VIM cover the torque dip I thinks. Because CPS open earlier than VTEC, it cannot use a wild cam like VTEC. A high lift cam would only give optimum power a high RPM. The higher the RPM, the higher lift is better. VTEC open at 7k (if not mistaken), thus it can utilize higher cam than CPS. High cam (high lift) is useless in low RPM. This is what I understand about cam profile system. Pls correct me if I'm wrong.

the problem is with proton do not have the ability to produce a high revving and reliable engine at a reasonable cost..proton can put in any degree cam lobe they want..but the engine will not be reliable
because it is made by proton at constant 7-8k rpm.
cps is running on a rather high cam profile (but not high enough to produce astonishing power), this make low end suffer and make fuel economy worse.
if proton want to make it a high peformance engine, the low rpm power too will suffer badly like a B16A or 4AGE.
we can say that campro is something in between power and fuel economy. but both dont works
cps as a high performance engine = phailed
cps as a fuel economical engine = phailed
japanese manufacture rarely produce those high peformance engine in low price family saloon anymore.