Volvo Cars have a long and amazing history that spans over years and decades. Starting from 1927, to today, they have been manufacturing cars for over eighty years. And over the years, they have only improved.

The general consensus is 17-18psi. Some people have taken it higher, but I don’t recommend it if you don’t have the money for a turbo replacement/upgrade.

RPM – Revolutions Per Minute. How many times is the engine spinning (performing a revolution) per minute. With the press of the accelerator, the RPM increases. Different cars are able to perform and a higher RPM than others – sports cars for example.

Cars owned by non-smokers sell better than those that are not. Cracked dashes are not very popular either. Pretend you are going to keep the car. Ask yourself if you think this is a car I could live with.

However, this is not an easy job to some. Most of them do not unbolt the exhaust and they have to cut it using a saw or a cutting torch. It could be a bit difficult but with these simple steps, you will be able to do this simple task.

So the term cat-back refers to all parts of the exhaust system between the outlet of the catalytic converter recyclers or cat and the outside air. This usually means a series of pipes, one or more mufflers, and perhaps exhaust tips.

Depending upon the type of hangers you have on your car, place the brand-new hangers onto the exhaust pieces first; this is normally a less complicated method to put the pieces back on.

The best cat-back systems are made with stainless steel and have a lifetime warranty. In this category you can find systems with less restrictive mufflers. These mufflers will regain some lost horsepower that the stock muffler took, because of its internal design and the backpressure it developed. Some are called “glasspacks” and others are “straight through” designs. You can also find systems that lower the sound frequency and give you a deep sound that is not normally found on the typical four or six cylinder engine. And of course you can find systems that have a giant tail pipe tip. It looks impressive, but for practical terms does not do much for your car.