Outside air temp affecting running, what gives

[77 Z]

The hotter the day gets the better my 77 Z runs, the engine temp does not rise according to the temp gauge, but when the outside temp is in the upper 80's to the mid to upper 90's the car just gets better and better , the engine smoother and smoother..can someone tell me why this is happening..

Again the overall engine temp is great , could it be a air fuel mix that as the air becomes hotter it allows for the engine to run smoother or what...

Could I have possible when looking at the inside of the air flow meter ( a lttle more than looking) accidently without knowing it made a change that would make for someting like this to happen) ...

77 Z

[77 Z]

Dont know what happened to the text...anyway...the higher the outside temp becomes the smoother my engine runs, the better the car runs. Awhile back I was looking at as well as touching the inside of the air flow meter, could I have possibly by touching the arrow like piece , reset the flow rate or done something that would have an effect on the engine so that what is going on now could have been the result of slightly moving the arrow...

As the temp goes up throughout the day the car just gets stronger and stronger, smoother and smoother..while the engine temp remains constant...