First of all thanx to LOGAS.
LOGAS refered me to Jameel. I went to Defence to remove CC. The Cylincer mechanic did good work and removed the CC. He did not only remove the CC but also removed the whole dholki and fixed a pipe and welded it. The pick of car improved alot. But the knocking problem was still there. One more problem added that my cylincer is vibrating alot and giving sound of sports car.
Today I went to Heaven CNG and converted my car to CNG. The total package was of 35K. Landirenzo Kit with Landirenzo Emulators and Advancers. I also changed Air Filter and bought Guard air filter which costs 250. Those guys did a good work and the pick of car is same like petrol. There is not much difference.
Now come to the knocking problem again. The car does not move fast from zero km/hr with AC switched ON on CNG. I had to switch off the AC and when car accelerates I switched ON the AC and it worked OK. The CNG heaven guy told me to refill the petrol tank with High Octane and drive at least 100 KM on high speed. Insha Allah knocking will be gone and ofcourse this thing will increase CNG's performance too.
I refilled my Vitz's petrol tank with Hi Octance and went to motorway. I went to Sheikhupura on 135 KM/hr above speed and then came back to Lahore on same speed. The top speed I gained was 141 KM/HR but due to policemen i had to reduce the speed otherwise it could go further more. The picture of ODO is attached. After driving so fast I felt that knocking problem disappeared. After coming to Lahore I stopped the car and drove it from zero km/hr. There was still no knocking prb.
Then I switched the car on CNG and see its performance and amazingly it was working very good on CNG. It was my first day on CNG. I hope no problems will occur in future. I'll update you all with more experiences.
One problem is still there that cylincer is vibrating alot and giving sports car's sound which I dont like. I'll go to mechanic soon and will try to fix this problem too.