Le mans engine help needed

I need some help with the le-mans engine.
I am nearly done but I seem to be missing those last few points in engine responsiveness.
It has to be 79 I am at 74,8 what do I have to do to fix this?
I am nearly done but I seem to be missing those last few points in engine responsiveness.
It has to be 79 I am at 74,8 what do I have to do to fix this?