Hi, my name is matt and I'm 17, I just bought my first car a couple months ago, on october 31st to be precise and ive noticed my exaughst smoke is a lot thicker than most 944s I've seen. It smells give, but I'm a little worried coolant is getting into the combustion chamber and being burned. The only other thing I could think of it being is the guy who owned the car before me put VW GTI injectorsin changed the fuel pump so could it just be running lean?

First image is at idle 800 rpm
I cant upload the second image right now as it is in png format, But please does anyone have any ideas?