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Engine Performance

In the Engine Performance section, learn about horsepower, carburetors, the difference between turbochargers and superchargers and even how nitrous oxide boosts engine performance.

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5 Tips for Starting an Old Engine

Engines were made to run; but if you've ever tried to start an old car that's been sitting unused for a long time, you know that it isn't always as easy as just turning the key.


Will new motor mounts increase engine response?

Motor mounts normally hold your car's engine firmly in place. But worn-out mounts allow a running engine to shift and bounce in all kinds of unpredictable, power-sapping ways. See more »

How does engine placement affect handling?

There are plenty of great reasons to design a car with its engine in the front; however, the same can be said for placing the engine behind the driver. Does engine placement really matter? See more »

Do exhaust cutouts increase horsepower?

Modern car and truck engines are typically efficient and powerful at the same time. But is there a relatively simple way to free-up some additional horsepower through the exhaust? See more »

How much horsepower does a cold air intake add?

A cold air intake is one of those rare modifications that works pretty well on its own. But how much horsepower can you really expect to gain? See more »

How much horsepower does a performance muffler add?

Replacing your car's stock muffler with a performance muffler is a good idea -- that is, if it's a rusted-out mess and you need to replace it anyway. But will this mod actually increase horsepower? See more »

5 Cheap Ways to Increase Horsepower

If you're serious about increasing your car's horsepower -- and you have deep pockets -- your options are almost unlimited. But what can you do if you're on a tight budget? See more »

How much horsepower does a supercharger add?

A supercharger is a considerable investment; however, it's also one of the best ways to improve the fun factor of driving your car or truck. How much additional horsepower should you expect? See more »

Does a dual exhaust system improve your car's performance?

It seems like clearing out the exhaust as fast as possible would give you a bit of an edge over the competition. But does a dual exhaust system really improve your car's performance? See more »

How much horsepower is enough?

Modern car engines can create massive amounts of horsepower -- and everyone wants more power, right? But how much is too much? And how much is just enough? See more »

5 Innovations That Reduce Engine Vibrations

There are lots of reasons a car or truck can shake and rattle while it's on a roll; but engine vibration is one reason that deserves a little extra special scrutiny. See more »