Originally Posted by
Westcoastrocks
So quick question. People seem to be a little worried when they use a EFIE to adjust their car to run lean on gas. Obviously they don't want to hurt their engine. When i read posts on that subject it seems kinda up in the air because there was no real way to tell if you are doing damage to your engine without breaking it apart to check the pistons ect. So if all you had to do was check your plugs now and then to see if they are not running lean wouldin't that fix the problem?