STOCK
Stock
No added power
Simple Install
Plug It In. Drive.
No splicing. No apps. No tune flashing.
Almost Ready.
We do not have a release date at this time but are working hard to get you #stealthequipped - Hang tight! Be sure to sign up so that you are the first to know.
FitmentMade for
Year
2024-2027
Make
Toyota
Model
4Runner
Engine
2.4L i-Force + Max
10Years
The proof is staying power
Ten years behind the product.
Performance claims are easy. A decade in business is the credibility.
Real-world performance
Performance you recognize before anyone else notices.
The Stealth owner is not chasing attention. They want the better-driving truck—the one that responds sooner, pulls harder, and feels more alive.
Merging
Step into traffic with stronger response and less hesitation when the opening appears.
Passing
Get a more immediate answer when the gap opens up and the truck needs to move now.
Grades
Carry speed more naturally when the road starts to work against you and momentum matters.
Towing
Make the truck feel more capable when a trailer or payload asks more from it.
4 Power Levels.
LOW
Low
First drive / daily
MED
Medium
Strong daily power
HIGH
High
Maximum output
All the details
What's happening under the hood?
A clean technical breakdown for those who want the deeper explanation.
The Catalyst Module is a stand-alone computer that installs under the hood and connects directly to the vehicle’s factory boost sensors. Its internal software optimizes the boost signal, allowing the turbocharger to build boost sooner and deliver it more effectively throughout the low-to-mid RPM range.
The result is quicker turbo response, stronger torque when and where you need it, and smoother, more predictable power delivery. Drivers experience improved acceleration, vehicle responsiveness, and overall drivability all without flashing or reprogramming the vehicle’s computer.
Your vehicle’s factory computer remains in control, and its built-in safety measures stay in place. The Catalyst Module is a safe, non-invasive performance solution for everyday driving and towing.
- Improved overall drivability, responsiveness, and performance
- Quicker boost response with reduced turbo lag
- Increased low-to-midrange power—where it matters most in everyday driving
- Stronger takeoff and acceleration through the lower gears
- Smooth, predictable power delivery across the low-to-mid RPM range
- Increased horsepower and reliable torque
- Safe for everyday driving and towing
- Factory-style, all-weather OEM connectors for quick and easy installation
- Connects only to the vehicle’s factory boost sensors
- No ECM flashing, permanent programming, or wire splicing
- Factory safety measures and fail-safes remain in place
- Warranty friendly; the module should be removed before service
- No external OBD-II monitors or supplemental devices required
- Selectable four-position switch: Stock, Low, Medium, and High
Yes! The Catalyst Module is different from a traditional flash tuner. It does not flash or reprogram your vehicle’s ECM. Instead, it works within the manufacturer’s factory safety parameters, requesting only performance the vehicle is already capable of delivering.
Because no permanent changes are made, removing the Catalyst Module returns your vehicle completely to its stock configuration.
No additional modifications, wire splicing, software downloads, or monitoring gauges are required. Simply plug in the Catalyst Module and enjoy safe, reliable power.
Fuel economy cannot be guaranteed with any performance modification. Some Catalyst-equipped vehicles may see improved MPG as the added low-end power helps the vehicle maintain lower RPMs and hold higher gears. With responsible driving habits, better fuel efficiency may complement the Catalyst Module’s improvements in responsiveness and overall drivability.
We recommend purchasing the Catalyst Module for its performance and drivability benefits, with any improvement in fuel economy considered a potential bonus.
Visit the FAQ section of our website for helpful tips on maximizing your vehicle’s fuel efficiency.