Engines primarily function as air pumps, and the bigger the pump, the more power it will have. In other words, your vehicle's engine is almost always moving air in and out of itself, and a good vacuum system will make sure it does it properly and efficiently. Without the efficiency, your vehicle will not function the way you want it to.
If your car tends to idle at low RPM's, it may be time to take a look at your vacuum system. Here at StockWiseAuto.com, we have the vacuum hardware you need to keep your vehicle operating at maximum efficiency. If the vacuum is too weak, your vehicle will struggle to distribute air throughout the engine.