I'm having some trouble with my subby.
It's a WRX wagon 2002 with a ej205 engine, everything stock except for modified exhaust system, walbro pump and adjustable fuel regulator.
While driving for short periods, car runs fine. But while i'm on a long ride, lets say 30 minutes or longer, and being pretty hard on throttle, car starts overheating and coolant spitting out of reservoir. Then I let the car cool down, fill up the missing coolant, and continue slowly to the destination with no issues.
Coolant cap looks ok but, rated at 90 kpa (0.9 bar). Now after a little search I find out that the pressure needs to be 108 kpa (1.1bar).
Do you thing that the low rated cap can cause those issues?
Any thought/help from you expert about the problem?
Thanks in advance!