So after a lot of reading I decided to post my own thread because it seems like a unique riddle.
Here's the car and recent info.
04 WRX wagon with HKS BOV and 3" catless Up pipe 138,900 miles.
Timing belt and water pump done at 111k
New ignition coils and spark plugs at 138,500 due to misfire in cyl 1 and 3
Here's what's going on.
A poor weld on the downpipe has produced a leak close to the turbo. The leak is not from the flange but from an actual small hole in the weld. I planned on replacing it with an entire Cobb TBE but I want to solve the rest of the issues before doing so.
Last night, the heat stopped working in the car and the temp gauge said the car was overheating after driving for 10 minutes. I pulled over and the motor was cool to the touch. Once the car reached H on the gauge the heater did start blowing hot air. The gauge would drop to normal temp by simply pulling over and letting the car idle.
There are no external leaks from the car and the coolant level was only slightly low, but there is a smell of burning coolant. (I attributed this to the downpipe leak).
The car does not idle rough and it hasn't lost any power or acceleration. I have read a lot of threads with the issues I've mentioned but none that have them all simultaneously. Are these issues related? I appreciate any and all input. This is my first turbocharged car and it's like learning a new language.