


The Nitrous Express Maximizer 6 Progressive Controller delivers precise multi-stage nitrous control with advanced safety monitoring to maximize horsepower while protecting engine components. Designed for street or race applications, it supports multiple activation strategies and data logging, making it ideal for achieving consistent, high-performance results across gasoline or diesel engines.
Top Features
Controls up to 4 nitrous stages
RPM, TPS, MPH, boost, and time-based activation
Advanced safety shutoff and AFR monitoring
Built-in drivers for stages 1 & 2
Data logging for 100+ runs
Laptop tuning with optional touchscreen display
Vehicle Fitment
Universal fit (all years)
Compatible with all makes and models
Supports gasoline and diesel engines
Works with naturally aspirated and forced induction setups
Physical products may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed, it is non-refundable.
Digital Products, such as MPT Tunes and HP Tuners Credits, are not covered by this.
Please see our Refund Policy or contact an MPT Expert for more information.
MPT is proud to offer free shipping on most orders over $149.
Free Shipping applies only to the contiguous United States. Shipping and handling charges will apply to all orders outside the contiguous US, with the buyer being responsible for any duty fees or taxes their home country may charge to import goods.
With Free Shipping, we will choose the best shipping method for the order. We use all major carriers, including USPS, FedEx, UPS, and DHL.
Items not stocked at our location may incur additional lead-time or charges.
Please our Shipping Policy for more information.


Proposition 65 (Safe Drinking Water and Toxic Enforcement Act of 1986) is a California law that applies to all companies selling products in California. Proposition 65 requires warnings if a product contains any listed chemical present above very low levels that are known to cause cancer, birth defects or other reproductive harm. Proposition 65’s warning standards are among the most stringent in the world. Proposition 65 is not a product safety law, but rather a “right-to-know” law. Businesses are required to provide warnings to comply with Proposition 65. These warnings are required to be in place for all products offered for sale in California.
There are over 800 chemicals on the Proposition 65 list, which is administered by California's Office of Environmental Health Hazard Assessment (OEHHA), a part of the California Environmental Protection Agency. The list includes naturally occurring and man-made chemicals. Proposition 65 warnings can be seen for a wide variety of everyday consumer products, including Automotive Performance products, and warnings can be seen posted throughout California in a variety of establishments such as hotels, restaurants, automobile dealerships/repair shops, and retail stores just to name a few.
To comply with the requirements of Proposition 65, this warning is present on all products sold by MPT.
More detailed information can be found by going to:
https://www.p65warnings.ca.gov/
The Nitrous Express Maximizer 6 Progressive Controller is an advanced, race-proven nitrous management system engineered to deliver precise power control while protecting engine integrity. Designed for serious performance enthusiasts, this controller allows up to four stages of nitrous to be applied progressively based on multiple inputs such as RPM, throttle position, boost, MPH, or time. Its intelligent safety monitoring continuously analyzes critical engine parameters—including air/fuel ratio, nitrous pressure, and user-defined sensors—to ensure optimal performance without risking engine damage. With powerful data logging capabilities, flexible tuning options, and support for both gasoline and diesel applications (naturally aspirated or forced induction), the Maximizer 6 stands out as a premium solution for maximizing horsepower safely and consistently.
Key Features
Controls up to four stages of nitrous with progressive delivery
Multiple activation strategies: RPM, time, MPH, throttle position, and boost-based control
Advanced safety monitoring for AFR, RPM, nitrous pressure, boost, and additional sensors
Automatic nitrous reduction or shutdown when unsafe conditions are detected
Built-in drivers for stages 1 and 2 (up to 70 amps each or 140 amps combined)
Supports optional 4-inch touchscreen display for real-time tuning adjustments
Windows-based laptop programming for precise calibration
Internal memory capable of storing over 100 quarter-mile runs
Compatible with gasoline and diesel engines, naturally aspirated or forced induction
Benefits
Maximizes horsepower delivery while maintaining engine safety
Improves traction with smooth, progressive nitrous engagement
Enhances consistency for drag racing, street performance, and competitive motorsports
Reduces risk of engine damage with real-time safety intervention
Provides detailed performance insights through advanced data logging
Offers flexible tuning for a wide range of racing styles and setups
Backed by Nitrous Express limited manufacturer warranty for added peace of mind
Product Specs
Controller Type: Progressive nitrous controller (multi-stage)
Number of Stages: Up to 4 stages (2 internal drivers, 2 external required)
Input Signals: RPM, TPS (throttle position), boost, MPH, AFR, nitrous pressure, user-defined inputs
Data Logging Capacity: 100+ quarter-mile runs
Display Compatibility: Optional 4-inch touchscreen monitor
Programming: Windows-based software via laptop
Material: High-quality electronic components with durable housing
Color: Black housing
Power Handling: 70 amps per stage (stages 1 & 2), 140 amps single stage mode
Application: Universal performance vehicles (gasoline & diesel)
Install Difficulty Level
Installation is considered straightforward for most performance enthusiasts with basic wiring knowledge. The system is designed with user-friendly setup and clear input connections, allowing installation to be completed in as little as a few hours. With laptop-based configuration and optional touchscreen control, dialing in the system is simple and efficient.
Vehicle Fitment
This is a universal-fit nitrous controller designed for a wide range of vehicles. Compatible with:
Year Range: Universal (all years)
Makes: All major automotive manufacturers
Models: Cars, trucks, and race vehicles equipped with nitrous systems
Engines: Gasoline and diesel, naturally aspirated and forced induction (turbocharged or supercharged)
Emissions Information
This product is not CARB approved and is not legal for sale or use on emissions-controlled vehicles in California.
For questions about this product or to report any description inaccuracies, contact the MPT Performance experts at (407) 636-7077 or by email.
MPT is proud to offer free shipping on most orders over $149.
Turnaround Times:
Special Considerations:
A Return Authorization Number is required for all returns. Please contact an MPT Expert to obtain an RA # before sending anything back to us for any reason.
MPT tuning charges and license fees are Non-Refundable. The sale is final when MPT has sent the tune file over email. This includes both new tune purchases and tune updates.
Products other than MPT tunes, digital products, and MPT decals may be returned within 30 days for any reason, provided that the product has not been installed and is in brand new, unused condition with the original packaging. Once a product has been installed it is non-refundable. We reserve the right to deny the return, should the product be received and it display signs of installation or unmentioned damage.
For vehicle programmers/tuners, the vehicle must be returned to stock if a program was installed. If a tuning device is returned and has not been returned to stock, a refund will not be issued, and your tuner will not be sent back without a shipping and handling fee.
The customer is responsible for all shipping charges incurred during the return process.
Amount Refunded:
•Returns post marked before 30 days from the date the item was received will be refunded the purchase price, minus a 25% restocking fee and the cost of shipping.
•After 30 days, all sales are Final.
•Shipping charges along with any package insurance are non-refundable. If your purchase was shipped with our Free Shipping option, the cost of the shipping will be subtracted from the total refund amount.
HP Tuners Credits are assigned to the HP Tuners product with the submitted serial number and cannot be transferred. Once you load a tune to your vehicle with the RTD, these credits are Non-Refundable.
Digital products and files that have no ability to be taken back physically, such as an SCT Tuner Unlock, are Non-Refundable.
nGauge Tune License Fee is included in your initial purchase of MPT tunes for the nGauge. This fee is factored into the price of the tunes and becomes Non-Refundable when the stock file has been emailed to MPT.
MPT Decals are Non-Refundable, once they have been received by the customer.
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Tuning is very satisfying, even on German Autobahns!
Shifting is so much smoother and truck gets off the line quicker. Highway cruising feels lighter, badass tune and great customer service, worth every penny. 5 stars.
I can always count on MPT for perfect fit parts. They are working great.
went with mpt based on their reputation, got 3 tunes, power gains are impressive with the prx tunes no more turbo lag, improved shifts and way more torque, also great customer service for information
First and foremost I am impressed and have been pleased with MPTs Customer Service. I’ve been wanting more kick in my pony but specifically a well known reputable team who specializes in the 3.7 engines. My pony has high mileage and pulling harder than ever quite literally with my MPT tunes. My car launches now and from a dig she not only breaks traction and pulls hard but she barks again around 40mph for a couple seconds! Absolute BLAST! If you’re debating on running this tune, you need to do it.