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Message: <blockquote data-quote="turbosnake281" data-source="post: 1047146" data-attributes="member: 17544">Don't start with the radiator cap, the only way a radiator cap can over heat the system is mostly loss of water and low pressure! , 1 fill and burp system proPerly while running heater (make sure blowing hot air), 2 let the car idle for an extended amount of time while watching endgine bay and temp gauge if it continue to overheat and bubbles from boiling water are present when you open the cap (u should feel something kicking through the resivour while it's idling and biggining to overheat), if this occurs then there is a blockage in the system not allowing water to surculate I'd start by changing the thermostat as it mostlikley will be bad.This is all saying that your fans are working, you have no leaks in the system, and your burping properly.Being said that this all happened directly after your intake swap I would say that you are not burping the system correctly as these motors are a little tricky to get all the air out. If the overheating thing isn't a fat occurring thing and is just happening after a day of driving then possibly your rad cap, you should beable to squeeze you rad hose and feel that it is pressurized (feel another cars to compare) you can have your radiator cap tested, it most likely won't hold to 16 psi but don't automatically think that's your problem!!</blockquote>