Maximize the Fun & Efficiency of Your Geo

Small but Mighty. Give your Geo the modern punch it needs.

The Geo brand was built on a simple premise: reliable, efficient, global engineering. Whether you drive the legendary 3-cylinder Metro, the Toyota-powered Prizm, or the rugged Tracker, your car is a survivor. But let's face it: 1990s economy cars struggle on modern highways. Merging can be scary, and turning on the A/C feels like dropping an anchor.

The Stage 3 "Rad-Spec" Performance Module is the modern upgrade your classic commuter needs. It optimizes the simple, robust engines found in 1996+ Geos, squeezing out every ounce of available power to make highway driving safer and city driving peppier.

✔ Fix "A/C Power Loss". ✔ Safe Highway Merging. ✔ Maintain Legendary MPG.

Why Upgrade to Stage 3?

• Maximize Horsepower: On a light car like the Metro or Storm, even a modest gain of +15 to +20 Horsepower is a difference you can feel instantly. It transforms the car from "slow" to "zippy."
• The "A/C Solution": We optimize the idle and load maps so your engine doesn't bog down when the air conditioning compressor kicks on. Stay cool without losing speed.
• Highway Confidence: Provides the extra mid-range torque needed to merge onto 70 MPH freeways and maintain speed on inclines without constantly downshifting to 3rd gear.
• Global DNA Compatibility: Specifically tuned for the Japanese-engineered hearts of the Geo lineup—the Suzuki G-series (Metro/Tracker), Toyota 4A-FE (Prizm), and Isuzu (Storm/Spectrum).
• Simple Installation: Designed for the 1996-1997 OBDII models (and later rebadged Chevy equivalents). Plugs directly into the port under the dash.
• Fun Factor: Restores the "go-kart" feeling of these lightweight chassis, making your daily commute genuinely entertaining.

Modern Tech for 90s Legends

Geo engines are mechanically bulletproof but electronically basic. The Stage 3 Tuner brings modern mapping logic to these classic ECUs.

The "Lightweight" Advantage: Because Geo vehicles are so light, a small increase in torque translates to a huge improvement in drivability. Our chip optimizes the ignition timing advance, which is often very conservative from the factory, to wake up the engine response.

For the Metro (3-Cyl & 4-Cyl): It smooths out the idle and gives you the grunt needed to pull away from stoplights ahead of traffic.

For the Tracker: It provides the low-end torque necessary for turning larger tires or off-roading, similar to its Suzuki Sidekick twin.

100% Safe & Reversible

You keep your Geo running because it's reliable. We intend to keep it that way. The Stage 3 Performance Chip is 100% safe for high-mileage engines.

No Risk: The device acts as a piggyback signal modifier. It does not permanently change your car's computer. If you want to return to stock, just unplug it. It is the perfect upgrade for preserving these increasingly collectible economy cars.

Choose Your Performance Profile

The Stage 3 "Rad-Spec" is designed to make your Geo capable of handling modern traffic speeds.

Frequently Asked Questions

My Geo is from 1995 or earlier. Will this work?
This specific chip is designed for OBDII vehicles (1996 and 1997). If you have a 1996 or 1997 Metro, Prizm, Tracker, or Storm, it is plug-and-play. *Please check your connector before ordering.*

Will this hurt my gas mileage?
Actually, it often helps! By giving the engine more torque, you don't have to floor the gas pedal just to keep up with traffic. Many Metro owners report maintaining their 40-50 MPG average while enjoying a peppier drive.

Does it work on the Prizm (Toyota Engine)?
Yes. The Geo Prizm is mechanically identical to the Toyota Corolla. The chip optimizes the legendary 1.6L and 1.8L Toyota engines for better mid-range passing power.

Is installation hard?
Not at all. The port is located under the dashboard on the driver's side. Just plug it in. It’s the easiest modification you can do.