Whenever I turn the heat up after the car has warmed up, I get exhaust smells.
Today after work, I idled the car for a while & checked under the hood. It smelled like rich fuel burning.
I'm assuming it's an exhaust leak but I could be wrong.

Anyone else have this problem b4?

Also, I'm planning on flushing my radiator soon. Anyone know the ratio for antifreeze-water? 50/50? :confused:

I have a 2k2 WRX.

Thanks in advance...

Sounds to me like that would probibly be an exhaust leak also.
50/50 is a good ratio to use depending on where you live and how cold it gets there. You might what alittle more antifreeze if you live somewhere alittle more colder.