Today I removed the heater and A/C box on my 87 CSX in order to install a new heater core. I'm in the middle of cleaning and overhauling the assembly now. Thankfully there wasn't dead mice in it unlike when I did my 87 SL!
Now, the A/C doesn't work on the car and hasn't in years. I could care less about having functional A/C since I live in northern Wyoming. So it occured to me that I might be able to improve heater performance by removing the evaporator and blocking off the box and firewall where the A/C lines and H-valve were.
Waste of time or worth it? Obviously the heater is very important and I've also considered eliminating the heater control valve and making sure I have a 195' thermostat installed. Since the blower motor has to blow through the thick/dense evaporator it seems like just removing it could really help.