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So this mod is purely to make under the hood a little easier to work on? What about cons? Is there a drop in fuel economy? I know the system is supposed to increase emissions quality or something like that right?
You may have seen this by now:

http://www.impalassforum.com/tech/engine/air_pump/air_pump.htm

There's a TSB for disabling the system because it causes some problems and passes emissions easily without it. The TSB doesn't cover removing the hardware but since it's doing nothing in there if you have to move it there's no need to put it back.
 

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What would cause the passenger side hose on this system to get really hot? I have replaced it twice recently due to it getting to hot.
 
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