You are correct; none of the “chips” are any good at all. And since you have an 06, even a PCM tune would be a pain since you would have to swap in a 05 PCM. Which I personally don’t recommend doing. What you can do is replace your spark plugs, I recommend AL606s. Replacing the plugs is probably the only thing that will make a noticeable difference. Cleaning your MAF sensor might help also. And those are the two big “engine” things. The other big thing is keep your tire air pressures at least 30 psi.
