What the titles says. Assuming vaccuum problem. Maybe hose to booster? It just started after I replaced the hose from the the air filter to the head gasket. So im assuming I knocked something loose.

 

If you didn't have the problem before replacing the hose it is a good bet you are correct . Just double check everything you were near and you should be able to spot the problem. (You did use the correct size hose, right?)