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Hi what the big hose that run from the airbox. To some thing that looks like a water pump by starter. Then runs to back side of engine.
 

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Hi what the big hose that run from the airbox. To some thing that looks like a water pump by starter. Then runs to back side of engine.
You will have to post a picture or provide a better explanation.

The air box is inbetween the air filter and throttle body
And
The airbox only has a small hose coming out of it, which is called the clean side PCV breather hose, and it connects to the top of the crankcase.
 

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Hi what the big hose that run from the airbox. To some thing that looks like a water pump by starter. Then runs to back side of engine.
Secondary Air Injection Pump
 
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