anyway,
I did below :
1. Ground cable, normal buy outside is $60++, I spend $10
2. Fuel saver, normal 1 set is $75. I spend $1.
3. Air intake , normal is $60, I spend $1
4. Voltage stablizer, normal is $100++, still thinking how to do..
After all the 3 items I done, I get better respond when stepping
the accelerator, and also 2.5km more per litre of petrol when
travel....