How to Choose the Right Vapor Trapper™ for Your Vehicle

Every custom build is different — engine swaps, fuel systems, and layouts all vary. But one thing they all have in common? Fuel vapors still need somewhere to go.

Choosing the right Vapor Trapper™ isn’t about adding another part to the build. It’s about solving a problem most builders don’t realize they still have until the car smells like gas.

Here’s how to choose the right one for your vehicle.

Why Vapor Control Gets Missed

During swaps and restorations, factory EVAP systems are usually removed. They don’t fit the new setup, and they’re rarely designed for modified applications.

So the tank gets vented.

That works — until it doesn’t. Fuel vapors build pressure, escape through vent lines, and end up in the garage, cabin, or both. Modern fuels only make the problem worse.

Understand Your Fuel System Layout

Before choosing a Vapor Trapper™, consider:

• Vent line size

• Tank location

• Return or returnless system

These factors influence how much vapor your system produces — and how much capacity you’ll need to capture it effectively.

Choosing the Right Size Vapor Trapper™

Smaller engines and light-use vehicles may only require a compact unit.High-performance builds, larger tanks, or vehicles that see frequent heat cycles benefit from higher vapor capacity.

The goal isn’t “biggest possible” — it’s right for your application.

Built for Builders

Vapor Trapper™ was designed specifically for custom vehicles — not adapted from an OEM application.

Universal fit. Clean install. No guessing.

It’s a simple solution to a problem builders have accepted for too long.