Revive the Spirit of the "Rapid Transit System"

The brand may be gone, but the Mopar spirit lives on. Make it faster.

Plymouth was always the brand for the people—affordable speed and daring design. From the cult-classic Neon (a favorite on the autocross circuit) to the retro-rod Prowler and the legendary Voyager, these cars have a loyal following. But let's face it: the factory tuning from the late 90s left a lot on the table, and aging sensors can make throttle response feel sluggish.

The Stage 3 "Rapid Transit-Spec" Performance Module is the modern upgrade your classic Plymouth deserves. Engineered to optimize the 2.0L High Output, 2.4L, and 3.5L V6 engines, this OBDII module updates the ECU logic to deliver the snap and response that Mopar fans expect.

✔ Wake Up the Neon 2.0L. ✔ Fix Prowler Acceleration. ✔ Modernize Throttle Feel.

Why Upgrade to Stage 3?

• The "Neon" Rocket: For Neon owners (SOHC or DOHC), safely unlock up to +25 Horsepower and +30 ft·lbs of Torque. It transforms the light chassis into a genuine corner-carving weapon.
• Prowler Performance: The Prowler's biggest criticism was its V6 performance. This chip sharpens the throttle curve and optimizes the 3.5L engine to make the car feel as fast as it looks.
• Voyager Hauling Power: For the minivan that started it all, the chip provides the low-end grunt needed to carry 7 passengers and gear without the transmission hunting for gears on hills.
• Transmission Logic Update: The 4-speed automatics (41TE) of this era were notorious for being "slushy." We sharpen the shift points to help the transmission engage faster and firmer.
• Universal Compatibility: Works seamlessly with all OBDII Plymouths (1996-2001), including the Neon, Breeze, Voyager, Grand Voyager, and Prowler.
• Plug & Play Revival: Installs in under 60 seconds via your OBDII port. No tools, no mechanic, and no greasy hands.

Smart Tuning for the Final Era

The final generation of Plymouths used robust Chrysler engineering. The Stage 3 Tuner optimizes these platforms for modern roads.

The Neon 2.0L Advantage: This engine loves to rev. Our module advances the ignition timing in the upper RPM range, giving the Neon a "second wind" above 4,000 RPM that is addictive on back roads.

The Breeze & Acclaim: These daily drivers benefit from improved throttle sensitivity, removing the "sponge" feeling from the gas pedal and making merging into modern traffic safer.

100% Safe for Aging Electronics

We know preservation is key. The Stage 3 Performance Chip is 100% safe for older ECUs.

Non-Intrusive: The device operates as a piggyback signal modifier. It does not permanently rewrite your vintage computer. It respects the factory safety limits of the engine. If you want to return to stock, simply unplug it. It is the easiest performance restoration you can perform.

Choose Your Performance Profile

The Stage 3 "Rapid Transit-Spec" is designed to bring Mopar muscle attitude to your Plymouth.

Frequently Asked Questions

Will this work on my 1970 Barracuda?
No. This device requires an OBDII port, which became standard in 1996. It works on all Plymouth models from **1996 to 2001**.

I have a Prowler. Will this make it faster?
Yes. While we can't turn the V6 into a V8, the chip significantly improves the 0-60 time by removing throttle lag and optimizing the shift points of the AutoStick transmission. It wakes the car up.

Does it work on the Neon Expresso / Highline?
Yes! The Neon is one of the most responsive cars to this upgrade. The lightweight chassis combined with the extra torque makes for a very fun drive.

Is installation difficult?
It is effortless. The OBDII port is located under the dashboard on the driver's side. Simply plug it in. It helps modernize the feel of the car instantly.