how a good Exhaust make different for your car?

Question

i wonder why people put in a new Exhaust? is it make your engine stronger or it is just for sound or what? and how to choose a good exhaust? thank you

so it will spend less gas or more gas?

Answer 1

The truth is that you can get a lot out of a car by installing a properly tuned exhaust. But most current cars come with reasonable exhaust systems from the factory. So the only reason to change your exhaust system on a modern car is to make more more noise. IT's easy to confuse noise with power, but don't be fooled.

Here are a few common misconceptions:

1) Bigger isn't better. Bigger is always louder, but can actually hurt performance. The problem with big pipes is that exhaust velocity drops. What you need to do is to figure out the ideal pipe size based on the ability of your motor to breathe. This isn't something you work out on the back of an envelope or pick from a catalog. Design software for exhaust systems is very costly. The alternative is to experiment on an engine dyno, which is also costly.

2) Any power gain will be made in the first 24" of the system...between the port and the collector. The rest of the system is just a waste pipe. As a result, your power gain from a well tuned header may be 25%, but the gain from a glasspak muffler will only be 5%.

3) Amplifying this point, cat back systems will never pay off in either fuel economy or performance. Coffee can exhuast tips are the height of stupidity. Any trained engineer would look at them and laugh.

4) Most stock cats are capable of flowing far more than the engine at road RPM's. Mods which involve removing the cat or drilling out the ceramic just cause unnecessary pollution and expose you to huge fines.

5) If you have a modern car with electronic fuel injection, the location of the oxygen sensor in your exhaust is critical. An incompetently executed aftermarket header can screw up your fueling system.

6) Exhaling is useless without inhaling. So any mods you do to the exhaust need complimentary mods to the head, intake and fuel system to have any effect.

7) Your car probably doesn't need more flow. Remember that the stock exhaust system is designed to flow adequately at maximum engine RPM. You probably run at less than half of that under most road conditions. If you were planning to cruise at 150 MPH, you would need something better. But where are you going to do that?

Answer 2

i own a repair shop and actually it will help the engine to breath better and run more efficient,and this gives an increase in horsepower,and it also sounds better also,but most people now are doing it for the sound and the power gain you can get from it,when you can gain anywhere from 18-25% horse power just from doing an exhaust system that's a real good gain,really it benefits you all the way around ,because anytime you can get more power you have to gain a little on mileage also,so most of the time you can justify buying one of these systems,they can be pretty expensive,depending on what you want from your car ,and what you want to spend on it,but that's the main reason for adding a good exhaust system,and they work,well spent money in my opinion,good luck i hope this helps.

Answer 3

Many motives: engine displacement, type of cylinders and firing order are the main important contributors to the engine's voice. you could adjust this with exhaust equipment layout, pipe length and length and mufflers. you could evaluate which you rather hear the ford engine in a Lincoln, however the ford engine interior the Mustang makes a healthful growl. they're the two V8s. lower back to the 4 vs the 8: whilst they're working, there's a various pulse frequency.To make a similar type of pulses in step with 2d, the 4 cylinder engine needs to run two times as quickly because of the fact the v8. it particularly is a exciting journey to perceive the engine by skill of its voice. With some prepare, you could tell a 4 from an 8 from a 6. humorous element nevertheless, The V12 Beemer sounds such as the previous H2 Kawasaki 3 cylinder. The Kawasaki replaced right into a 2-stroke,making comparable potential pulses in step with rotation as a 4-stroke v12.

Answer 4

Besides the sound. An exhaust will increase your horsepower by a certain percentage depending on all of those goodies under your hood. How to choose an exhaust depends on your car and your style and most important is it legal in your state.

Answer 5

A good exhaust lets your engine breathe. Better mufflers will make it sound better along with wider pipes but it will let your engine perform a lot better because it can release the exhaust a lot easier.

Answer 6

Yes, yes, yes what everyone else already said, BUT....

Think about this... cars are (supposedly) designed to get maximum performance out of the stock components. Sooo if you change the exhaust, you have more air coming out, but the same amount coming in. This will make you LOSE POWER. In order to effectively gain power, you must also increase how much air you are taking in (ie, a larger air intake).

Answer 7

The quicker air flows through the engine, the more horsepower and possibly better gas milage.

Of course, to move it quicker means bigger pipes, which means more noise, which is cool unless it's near your house.