on mine it has a tube on the side thats just randomly there, does anything go in there?
thanks

 

The hose that goes to the air pump.

 

just put a rubber cap on it and clamp it down.

 

do you think that can cause my car having a trouble code for the mass air flow system?

 

Possibly. Have you been running it open? You could suck dirt or moisture right into the mass air, so I suppose it could give you problems. I would definately either hook the hose up to it from the air pump, or if you don't have the pump hooked up I would cap it off as was said above.

 

yup, ive been running it open for about 3,000 miles lol maybe ill just be a poor bastard and tape it up haha