If you're bubbling your coolant when you boost you clearly have a headgasket problem. No amount of new radiators, thermostats, or rad caps will fix this. Do compression test, post the results, and if the numbers are funky you'll need to do a leakdown as well.


I can tell you already that you're 90% likely going to be pulling your head to swap headgasket and head bolts/studs.




PS: Everyone can stop being a jackass in this thread now unless they're fiending for some warning points.