After driving for a bit today I smelled coolant through my vents, so after making it to my short destination I decide to take a look to see if anything was leaking. The 5/16 coolant hose that attaches from the heater inlet hose to the throttle body went bad. so after replacing the hose with a new one and topping off the coolant. I go for a test drive after warming it up. I decide to rev it past 4500 rpm but then just to realize that the car started bogging and won't let me rev past 5k. What could be the problem?

 

Is your car tuned yet???????