Hey all, my car is mostly stock and the problem is I ping on plus and regular octane at high rpms. However, when I use 93 octane the car runs much smoother and no pinging problems.. is this normal?
Try cleaning your MAF. Cheap & easy fix for common problems.
Here is a link. Use CDC electrical cleaner instead of carb cleaner or alcohol. The CDC doesn't leave a residue behind. Apply it with the q-tip, and dry it with another.
T-20 saftey torx to remove the MAF out of the housing.