I need some guidence about tuning on petrol and cng ...
A perfect tuning should include
Which sensors cleaning
Which sensors adjustment
Most important of all timing how to optimize for pick and economy .....
How to adjust timing in a perfect way using timing gun or else ....
I have worst experince of tuning from mechanics
Last time car scanned and tuned so called [plugs cleaned ans co adjusted ]
But pick was not good especially on cng
But my little experiment with advancing of timimg led to good pick and economy on cng ...
Earlier car was doing hardly 130 km in full cylinder but after advancing of timming
Pick was good and milage jumped to 185 km .
So guys need really experienced and good advice .....