Yes Quite chilled AC and have to stop after some intervals.
Ijaz Bhai Today i have traveled out of City, Faisalabad and just came back and updating my experience.
Ac performance was excellent. But i felt a noticeable decrease in pic without AC. My khyber was running on CNG and consumption was also good. But the only issue is with its PIC. when I put 3rd gear i felt noticeable vibration in my foot from clutch Lever/Paddel. But on 4th gear vibration vanished. Before this I have traveled to Gujrat 1 month before but the Car was running at 120-135KM/h speed and car felt no any load. Like gari barai aram sai is speed ko achieve kar rai thee. But today it hardly touched 120km/h speed and with heavy heart. At some moment I stop the CAR on Motorway and tightened the plug wires. After that speed was Ok and raised to 130. But after 30-45 minutes speed again decreased to 110-115. There is no oil in CNG Kit. All this activity was without AC.
What is your opinion inthis regard. 
In my opinion Plug wires and Clutch wire ka problem hai. Plugs are NGK and changed 1 month before. Wires changed 4 month before and put ultima CNG-wires orange colour with DENSO Coil.