Extrudabody Technical Index

Fuel Delivery

Assembling a Rail
How to put the parts together.

Drilling Injector Holes
How to customize your fuel injector locations. Don't want to? Then let us do it

Mounting Options
The best ways to connect your fuel rail to your manifold or throttle body

Fuel Injector Sizing & Base Maps
Some tools for choosing fuel injector flow rate and creating a base fuel map to start tuning

Intake Manifolds & Plenums

Building a Manifold
If there is no suitable carb manifold, don't despair, do it yourself!

How to True a Manifold
Plan your installations with a few technical drawings

How to Build a Plenum ***NEW***
An overview of fiberglass plenum building. You can do it yourself from home with basic tools.

ITB Systems

Example Installations
See a few examples of Extrudabody product installations

Flow Test Results
Flow results from 3rd-party tests on ITB flow (CFM) and videos of flow demonstrations

Air Horn Comparison
Visualization of our air horn design to a more conventional design. Also compares the size and shape of our ITBs & Horns.

What You Need
Typical shopping list of parts you'll need to convert a car from carbs or stock EFI to ITB fuel injection

Dimensions
Plan your installations with a few technical drawings

ITB Installation Overview
How to put an ITB system together once you get it.

Throttle Control
An overview of Extrudabody's throttle control system, including a short video overview

Sizing Throttle Bodies
Some tips and links to help you choose bore size and intake length

Aligning Throttle Bodies
Details on test fitting ITBs to your manifold to make sure shafts align

FAQs & Support

FAQs
Take a look at let us know if you have any other questions

Helpful Links
A few sites and books that might help those new to EFI installs

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