Auto Parts & Accessories ~ Blowers
Some factory vehicles are equipped from the factory with blowers on them. When this happens the engine is also usually then built for more power as well, and usually has internal forged parts. These parts are stronger then un-forged parts, since they will be subjected to more stress under boost. Most people that buy factory boosted vehicles usually push up the boost a little more then factory settings. Usually factory settings are around 5-8 or 10 pounds of boost usually.
Supercharged cars can also have an intercooler or heat exchanger. These items help to cool down the inlet air temperature to help the engine run more efficiently. Larger more efficient intercoolers or heat exchangers are a common addition to boosted cars as well. Also sometimes people add methanol injection to their boosted rides, this in turn also cools down the inlet air temp. As well it adds a little more octane and horsepower to the overall number you're producing.
There are many different brands of blowers out on the market today. Some great ones, and a few not so great ones. Make sure you do your research and educate yourself well before buying a blower. It can be a costly mistake if you're not aware of what you're buying. Also it is a very expensive route to go most of the time when boosting a vehicle, there are a lot of additional extras that you need, in order to run a safe and efficient boosted car.
Blowers come in polished aluminum, powder
coated or even painted, usually not in chrome, because chrome usually holds in
heat. Heat is one of the main downfalls of a blower. When the blower becomes
heat sinked it loses a lot of its power making ability. A cool down time is
necessary in order to get back to the same performance level as when it was
cooler. So obviously running a blower vehicle on a cold fall day would be much
better performance wise then on a hot 105 degree day in the summer. But cold
fall days mean your tires will probably be harder since they're colder, and the
ground will be cold too, hence you'll lose traction easier when kicking in that
boost. Point here, Be careful!