He's making all the noises because he LIKES what you're doing, he likes how you feel and how you kiss. Why you think it's a turn off ... I don't know, but I think you should get used to it, because almost all guys make some kind of sound of approval when they get turned on by their girl.
If you don't like this about him, then it's pretty much over. Making out, kissing and other sexual things are part of who we are. He responds to how he feels, and how you make him feel. Why should he change that aspect of himself? You might as well tell him to change the color of his eyes, too ... you know what I mean?
You're not a match, darlin'.