The Proton Exora equipped with the CamPro CPS engine was one of the earlier iterations of Proton’s MPV lineup. Here’s a breakdown and description of the CamPro CPS engine as used in the Proton Exora:

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Engine Overview: CamPro CPS

• Full Name: CamPro CPS (Camshaft Profiling System)
• Engine Type: Inline-4, naturally aspirated
• Displacement: 1.6 liters (1597 cc)
• Fuel System: Multi-point fuel injection (MPFI)
• Valve Train: DOHC, 16 valves with CPS and VIM (Variable Intake Manifold)
• Power Output: Approx. 125 hp (123 bhp) @ 6,500 rpm
• Torque: Approx. 150 Nm @ 4,500 rpm
• Transmission Options: 5-speed manual or 4-speed automatic (in Exora)

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Key Features of the CamPro CPS Engine

1. CPS (Camshaft Profiling System):
   
• Variable valve timing and lift system developed by Proton.
• Adjusts the cam profile to optimize power and fuel efficiency.
• Improves low-end torque and high-end performance compared to earlier CamPro engines.
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3. VIM (Variable Intake Manifold):
   
• Changes intake runner length based on engine speed.
• Short runners at high RPM for better airflow and power.
• Long runners at low RPM for improved torque and driveability.
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5. Improved Performance:
   
• Solves the ''torque dip'' issue seen in earlier non-CPS CamPro engines.
• Better throttle response and smoother acceleration.
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7. Fuel Economy:
   
• Moderate fuel consumption for a 1.6L MPV, though newer turbo engines are more efficient.
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🧰 Maintenance Considerations

• Timing belt driven (must be replaced typically every 90,000–100,000 km).
• Regular maintenance on spark plugs, engine oil, and coolant is crucial for long-term reliability.
• CPS and VIM actuators may wear with time and can cause rough idling or loss of power if not functioning properly.

🆕 Comparison with Newer Engines

In later models of the Exora (starting from 2011 onward), Proton moved to a 1.6L CamPro CFE Turbocharged engine which offers:

• Better torque (~205 Nm)
• Improved fuel efficiency
• More power at lower RPMs, making it more suitable for MPV use

Summary

The CamPro CPS engine in the Proton Exora was a significant improvement over older CamPro engines, especially with the addition of CPS and VIM technologies. While it’s reliable and decent in performance, it is gradually considered outdated compared to newer turbocharged or hybrid powertrains. It’s a solid engine for daily driving but may feel underpowered when fully loaded or compared to newer MPV rivals.

Would you like a comparison between the CPS and CFE engines used in the Exora?