Alright so I have seen all kinds of opinions on here about what is best for mpg and power. Some people say that Toyota knows best and to not touch it, some that bolting on a few more parts can make a world of difference. I have seen self proclaimed mechanics take both sides!
So here it is:
What is the best for MPG and power when it comes to 2nd gen 4 bangers?
smack talk all you want but the poll is what matters.