When race exhaust are instaled car can produce more power. Why is it so?
If there is no restriction on the exhaust gases to get out, the engine is more efficient and makes more power. When you put on mufflers and other exhaust items (including bends in the pipe), it causes a back pressure in the exhaust so that it has to be pushed out of the cylinder head (and some gets left inside and will not burn again / takes up space in place of oxygen)
NO, DO NOT USE TREATED LUMBER. It is poisonous. Now, go to the library, get the book Square Foot Gardening. The system is perfect for seniors and there are directions for raised beds.
NO!!! Don't use that!!! There are other products you could use on the cheap, but can I suggest you ask a lumber yard or supplier to DONATE the lumber? They may be more than happy to assist in exchange for free advertising in your garden area (ie, garden supplies and lumber donated by xyz signs). There are a couple of great books on raised beds at the library. Mel Bartholomew wrote Square Foot Gardening and there is another (I can't remember the exact name or author) something about growing 100 pounds of tomatoes in a cheap foam box. The boxes are reusable and seem easy to assemble and should work for your needs. I have my raised beds in a couple halved 50 gallon plastic drums I picked up for $5 each from a barrel guy that gets them from food factories (Be sure they are food safe). I cut them in half the short way (they stand on their tops and bottoms) with a jigsaw and drilled holes in the bottom for drainage. There are lots of other ideas out there, be creative!!!
Engine releases power by burning fuel. Some of this energy is used to push burn process gases from the engine. Now if we make it as easy as possible for these gases to get out of the way, more of the power generated can be used for moving the car, thus appearing as increased power output. Simple as that.
