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How much HP does an intercooler add to a Focus ST?

An intercooler can add around 20-30 horsepower (HP) to a Ford Focus ST, depending on various factors. The exact power increase will depend on the specific intercooler installed, the tuning of the engine, and other modifications made to the vehicle.


What is an Intercooler and How Does it Affect Engine Performance?


An intercooler is a heat exchanger that is used to cool the air charge (a mixture of air and fuel) before it enters the engine's cylinders. This cooling process helps increase the density of the air, allowing the engine to produce more power.


In a turbocharged engine like the one found in the Ford Focus ST, the turbocharger compresses the air, which causes it to heat up. The intercooler helps remove this heat, resulting in a denser, cooler air charge that can be more efficiently burned in the engine. This, in turn, leads to increased horsepower and torque output.


Factors That Affect the Power Increase from an Intercooler


The exact power increase from an intercooler can vary depending on several factors:



  • Intercooler Size and Efficiency: Larger intercoolers with more surface area and better heat transfer capabilities will typically provide a greater power increase.

  • Engine Tuning: The engine tuning and calibration can be optimized to take full advantage of the increased airflow and cooling provided by the intercooler, resulting in a larger power gain.

  • Other Modifications: If the Focus ST has other performance upgrades, such as a larger turbocharger, high-flow fuel injectors, or a custom tune, the power increase from the intercooler may be even greater.


It's important to note that the power increase from an intercooler is not a fixed number and can vary depending on the specific setup and modifications of the vehicle.

How much HP does a downpipe add?


10 to 20 horsepower
An aftermarket downpipe with catalytic converters will add 10 to 20 horsepower on average, and that gain is noticeable anytime the turbo spools.



How much difference does a bigger intercooler make?


Larger intercoolers reduce pressure drop, but do not introduce turbo lag. Stock intercoolers use the cheaper tube and fin design, which are less efficient in cooling due to their corners and they introduce more pressure drop.



How much HP will an intercooler add?


But they do not themselves add horsepower. The greater the temperature drop of the intake air achieved by the intercooler, the more power the engine can generate. An intercooler can dramatically reduce the intake air temperature, and therefore improve engine performance while decreasing the risk of overheating.



Do intercoolers increase turbo lag?


Wastegate Operation: Incorrect wastegate operation can lead to increased lag. Intercooler Efficiency: An inefficient intercooler can slow down the cooling process, contributing the issue.



How big is the intercooler on a Ford Focus ST stock?


Back to the intercooler at hand. This unit has a height of 6 inches, and a width of 2.5 inches. From end tank to end tank, the length measures at 26 inches.



What is the benefit of adding intercooler?


The principle behind using an intercooler is rooted in basic physics: cooler air is denser than hot air, meaning it contains more oxygen in the same volume. This increase in oxygen leads to more efficient combustion and better overall engine performance.



How much HP does air intake add?


5-20 horsepower
Cold Air Intakes are said to improve your vehicle's performance by 5-20 horsepower. This number will vary depending on the make and model of your vehicle. While this isn't enough power to put you back in your seat, it will give your car or truck a little pep in its step.



How much HP can Focus ST handle?


For the record, 400whp is our comfortable limit on a stock engine. Anything more and we recommend reinforcing your engine with better internals. But here's what you need to know. There are many stock engine ST's running around with 400whp for many thousands of miles.



Is it worth upgrading an intercooler?


' and unfortunately, no, a turbo intercooler does not add horsepower to your car. That said, however, it does give you better and more responsive performance as your car has more access to oxygen and it can mean that you can tune your car more aggressively without risking damage to your engine.



How much HP does a cold air intake add?


5-20 horsepower
Cold Air Intakes are said to improve your vehicle's performance by 5-20 horsepower. This number will vary depending on the make and model of your vehicle. While this isn't enough power to put you back in your seat, it will give your car or truck a little pep in its step.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.