Campro engines incorporate with drive-by-wire technology (specifically electronic throttle control) for better response,eliminating the need for friction-generating mechanical linkages and cables. Previously there have been some issues with cracking oil pumps but apparently Proton have introduced a new part recently to solve this problem, my Waja Campro 1.6e is already resolve the issues.
The basic Campro engine coded as S4PH is a basic DOHC 16-valve 1.6 L engine that produces 110 bhp (82 kW) @ 6,000 rpm of power and 148 N·m (109 ft·lbf) of torque @ 4000rpm. This is the engine that powers the Proton Gen-2 first edition and now inside my Waja Campro.
Even though the S4PH engine seems to be quite powerful at higher revs, its performance is reportedly sluggish at lower revs and this is proven by driving the Gen-2 uphill where drivers who drive the manual transmission version have to shift a lot between 2nd gear and 3rd gear. This is due to its torque dip in the crucial 2,000 ~ 3,000 rpm operating range, where the torque actually decreases before picking up back to the maximum torque at 4,000 rpm. This torque characteristic can be clearly seen in manufacturer published engine performance curves. But apparently Proton resolve the issues with change a little bit of engine ECU assist by Siemens VDO and also gearbox ratio on automatic transmission for Waja Campro production.
