Get fan to auto
Install thermostat valve
Check map sensor if it's faulty replace it
Change spark plugs(use ngk g power spark plugs)
Clean fuel injectors
Use 10w40 engine oil not 20w50
Replace fuel filter
Replace air filter with new one
Check spark plug wires,they might be short
Car is manual or automatic transmission?
What is tyre profile?
Was it previously being run on cng?