Originally Posted by roger 04 rt
Here is a plot of AFR with and without an IAT shifting device set at 20C. It can be measured in Open Loop. The top plot is without the IAT shift and the bottom is with 20C shift.
I guess in this case "one picture is worth about million words".
With all the talk in this thread, lot of it quite vague and rather marketing like, this picture from Roger is the best and most clear demonstration of what a -20deg IAT offset really does!
I was always little annoyed that none of the various IAT offset device vendors on this forum never provided a plot like this.
Actually showing what their product does.
Instead everyone resorted to providing a lengthy verbal infomercial.