FREE SHIPPING ON ORDERS OVER $199*

Free Shipping

Free shipping is available within the lower 48 states for orders totaling $199 or more. Simply select the free shipping option during checkout. Even though expedited shipping is not free we will still discount the free shipping option from the expedited shipping cost for you. This offer excludes shipments going to Alaska, Hawaii, Military Boxes, and items too large to ship via UPS or USPS. These items are usually large freight or bulky items such as engine blocks, etc.

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Popular Applications

Turbo Size Calculator

When building a custom turbo kit, you often need to run a few numbers to find the best sized turbo for your application. Not all engines are the same, and because of this, not all turbochargers will perform the same from engine to engine.

The best way to accurately size your turbocharger is to have in mind what kind of power you're planning to make. While the amount of power desired varies based on application and intended use (street, strip, road course), it is important to factor total HP into your selection. Along with desired HP, you must know a few more details about your build including:

  • Charge Temperature - The anticipated air temperature entering the engine after the intercooler. Most track/street cars aim for a sub 130 degree post-intercooler air temp.
  • Peak RPM - The RPM range where you hope to make the most power. Note, this is not redline/rev limiter.
  • Displacement in Cubic Inches. Some common expamples are:
    4B11T=121.9 | 4G63=121.8 | EJ20=121.6 | EJ25=149.9

With all the information you have on hand, use the calculator to the right to find the correct sized turbocharger for your needs. If you have any questions, feel free to contact us and ask away! We've got years of knowledge regarding turbocharged applications, so we can help get you lined up with the best turbocharger for your application!

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Turbo Size Calculator


Peak Horsepower

Air Fuel Ratio

Typically 12:1.

Brake Specific Fuel Consumption

Typically .55

Charge Temp(Post Intercooler)

Typically >130.

Volumetric Efficiency

Typically .95

Peak RPM

Displacement in Cubic Inches

PSI Boost Required
Pounds Air/ Minute for Desired Hp CFM for Desired Hp

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