Hello, check several things in your vehicle before making larger disruptions, I suggest you:
1- With the help of a gas analyzer, check that the CO2 is in a value greater than 12 or 13 ppm (the greater the value is better the combustion), that the values of CO and O2, are as low as possible and their values are related (as close to 0 possible and that their vaalors are very proxim CO value is greater than that of O2, there is greater consumption of gasoline, if on the contrary it is the O2 that is higher you have a poor mixture.
You must check the state of the spark plugs (those of platinum are better) and the spark plug cables, that the air filter is not very dirty, that there are no fault codes present in your vehicle (Check Engine light light on the vehicle's board, consult its location in the owner's manual).
That is a good start to have a good time, if this does not work, I give you more checkpoints, this is the basic.
Greetings