Throttle Response + Real Power + Maximum Airflow + Aggressive Exhaust + Superior Cooling. One App. Total Control. No One Else Offers This.

Unlock the full potential of your FIAT 500 1.4L Turbo with the ultimate Stage 4 Power Pack. This is the only combination that gives you precise throttle response, genuine power gains, a high flow sealed intake system, a free flowing dual exit performance exhaust, a bar and plate front mount intercooler, and a titanium turbo thermal blanket, all controlled safely and seamlessly from a single smartphone app.

What’s Included
- MADNESS GOPedal Plus – Bluetooth throttle response controller  
- MADNESS MAXBoost ECM – Engine Control Module for real power & torque  
- MADNESS MAXFlow Intake System – BMC Carbon Canister + Aluminum Powder Coated Piping 
- MADNESS Monza Cat Back Exhaust – Dual Exit with Custom Exhaust Cut Tips (select at checkout)  
- MADNESS Front Mount Intercooler – Bar + Plate Design with custom silicone hoses  
- SILA Concepts Titanium Turbo Thermal Blanket – Multi layer heat containment

Together they form a perfectly matched system that transforms how your 500 1.4L Turbo drives. Sharper, stronger, freer breathing, cooler, louder, and fully customizable.

Why This Combo Is Special
One module sharpens how your right foot talks to the engine.  
The other delivers the actual extra power and torque.  
The intake feeds the engine cooler, denser air with minimal restriction.  
The Monza exhaust lets the engine exhale freely with a deep, aggressive dual exit soundtrack and improved flow.  
The bar and plate intercooler dramatically lowers intake air temperatures and reduces heat soak.  
The titanium thermal blanket keeps heat in the turbo for faster spool while protecting the engine bay.  
And the electronic modules are controlled by one free MADNESS app on your phone.

No other company offers this complete, integrated Stage 4 solution for the FIAT 500 1.4L Turbo.

What You Get
- Dramatically improved throttle response with multiple driving modes (Traffic, Eco, Street, Race + Protect & Valet)  
- Up to +30% more power and torque with optimized boost and fueling  
- High flow sealed intake for better airflow, filtration, and engine sound  
- Aggressive dual exit exhaust note with superior flow and no drone  
- Significantly lower intake air temperatures and reduced heat soak from the bar and plate intercooler  
- Faster turbo spool and cooler engine bay temperatures from the titanium thermal blanket  
- Instant mode switching and fine tuning (5 levels per mode) from your smartphone  
- Safe, non invasive plug and play installation that is fully reversible, no permanent ECU changes  
- German made electronics with ECE certification + Italian BMC filtration + T304 stainless exhaust + precision intercooler + premium thermal protection  
- Warm up protection, auto calibration, and a bypass plug for easy return to stock  


FIAT 500 1.4L Turbo Power Pack Stage 4 is the smartest, safest, and most complete performance upgrade available.  
No one else offers this.


Below you will find all other details on all six modules/components.

MADNESS GOPedal Plus Throttle Response Controller
The GOPedal Plus is one of the most recommended and highly reviewed upgrades for the FIAT 500 1.4L Turbo. It safely modifies the accelerator pedal signal to eliminate the lag built into modern drive by wire systems, delivering faster, more precise throttle response the moment you put your foot down.

Key Benefits
- Night and day improvement in throttle response for passing, merging, and spirited driving  
- Multiple driving modes so you can match the car’s feel to any situation  
- Full control from either the included wireless remote or the free smartphone app  

Driving Modes
- Traffic Mode – Softens initial response for relaxed stop and go driving  
- Eco Mode – More conservative throttle map to help maximize fuel economy  
- Street Mode – Sportier feel with reduced lag and smoother acceleration  
- Race Mode – Maximum response for the most aggressive driving  
- Protect Mode – Completely deactivates the throttle pedal as an anti theft feature  
- Valet Mode – Limits performance when someone else is driving your car  

Each mode offers five levels of fine tuning so you can dial in exactly the response you want.

Premium Features
- Wireless remote control + Bluetooth smartphone app control  
- Auto calibration for seamless operation  
- Warm Up Timer to protect the powertrain until the engine is up to temperature  
- Made in Germany to the highest standards and certified by the German Federal Motor Transport Authority (ECE regulations)  
- Fully reversible with no permanent changes to the vehicle’s software or hardware  
- Does not void factory warranty  
- Easy DIY installation in minutes with basic tools  
- 30 day money back guarantee and full 2 year warranty  

Thousands of FIAT owners worldwide already enjoy the GOPedal Plus. Once you experience the difference, you’ll never want to go back to the stock throttle response.

MAXBoost ECM by MADNESS Autoworks Engine Control Module
The MAXBoost ECM is the power half of the Power Pack. This precision engineered module unlocks significant gains in horsepower and torque while improving overall drivability all while remaining completely safe and reversible.

Performance Gains
- Up to +30% more power and torque 
- Approximately +25 PS** and **+58 Nm of torque (results vary by vehicle condition and supporting modifications)  
- Optimized fueling and boost for stronger acceleration across the rev range  
- Potential for improved efficiency in Eco mode  

Driving Modes
- Sport Mode – Balanced everyday performance with a sporty edge  
- Race Mode – Aggressive, high performance setup for maximum acceleration and driving excitement  
- ECO Mode – Focused on efficiency and reduced fuel consumption  

Each mode includes five levels of fine tuning so you can customize the power delivery exactly how you like it.

Premium Features
- Full control via the free MADNESS PowerPack smartphone app (same app that controls the GOPedal Plus)  
- Plug and play installation with original connectors with no cutting or splicing  
- Includes a bypass plug so you can instantly return the car to stock for service visits or diagnostics  
- Manufactured in Germany with state of the art electronics  
- Certified by the German Federal Motor Transport Authority (ECE & CE)  
- Dyno developed and real world road tested for reliable, repeatable results  
- 30 day money back guarantee and full 2 year warranty  

The MAXBoost doesn’t just add power, it transforms the entire character of the engine, giving your FIAT 500 1.4L Turbo the strength to match its newfound responsiveness.

MAXFlow Intake System w/ Custom Powdercoated Finish
A completely sealed performance intake system designed specifically for the FIAT 500 1.4L Turbo. Developed in partnership between MADNESS Autoworks and BMC Air Filters Italy using the same filtration technology used on many high power exotic cars worldwide.

This is a true bolt in system built around the premium BMC OTA (Oval Trumpet Airbox) filtering system. No inflated dyno claims, just a solid, properly engineered intake that delivers excellent filtration with minimal restriction and a great induction sound.

What’s Included in the Kit
- BMC Carbon Canister with the OTA Filtering System  
- High performance silicone connectors  
- Aluminum tubing powder coated for a durable, long lasting finish  (select color at checkout)
- TIG welded tubing for show quality appearance  
- Crankcase vent filter  
- BMC canister filter manufactured in Italy  
- All necessary mounting hardware  

Key Design Advantages
- Fully sealed system that channels cold air directly to the filter  
- Even piping diameter throughout to reduce turbulence  
- Solid mounting design that eliminates rubbing on the hood or interference with airbag sensors (common issues with other intakes)  
- BMC OTA system uses a patented internal airflow deflector and “Trumpet” design that works in a pressure regime rather than depression, delivering a constant high volume of air with very low pressure drop  
- 5 layer carbon fiber airbox for excellent thermal insulation from engine heat  
- Multi layer pre oiled washable/regenerable filter element that never needs to be replaced, only cleaned and re oiled with the optional BMC Cleaning Kit  

Why It Matters for Stage 4
The MAXFlow Intake feeds the MAXBoost ECM and GOPedal Plus a higher volume of cooler, cleaner air. This supports the power gains, improves throttle response feel even further, and adds a satisfying induction sound under acceleration completing the Stage 4 transformation when paired with the free flowing Monza exhaust, intercooler, and thermal blanket.


MADNESS Monza Cat Back Exhaust w/ Dual Exit with Custom Exhaust Tips
The free flowing exhaust piece of the Stage 4 puzzle. This complete multi piece cat back system is engineered exclusively for the turbocharged FIAT 500 1.4L MultiAir. It features a 2.5" open flow through design, equal pipe split, mandrel bent T304 stainless steel construction, and precision TIG welding for superior flow, durability, and an aggressive dual exit soundtrack with no drone.

Key Features
- Multi piece cat back design for easy installation and perfect fitment  
- T304 Stainless Steel, the highest grade material that will not oxidize or rust  
- TIG welded and mandrel bent for unrestricted flow and exceptional strength  
- 2.5" open flow through design with smoother bends than stock  
- Equal pipe split for balanced exhaust gas distribution and sound  
- Dual exit with custom exhaust tips (select at checkout) 
- Adjustable tip extension from the rear diffuser for a customized look  
- Direct bolt on replacement with no modifications required  
- Lifetime warranty to the original purchaser  

Performance & Sound Benefits
- Maximized exhaust flow for improved performance and turbo response  
- Deep, aggressive, throaty dual exit note that demands attention  
- Lighter weight than stock for better handling  
- No drone on the highway and refined enough for daily driving yet exciting when you want it  

This system is a direct replacement for the stock exhaust on all FIAT 500 Abarth models and 2018+ Pop/Lounge models with the 1.4L Turbo MultiAir engine. (Single exit non ABARTH cars may require a dual exit diffuser, available as an option.)

MADNESS Front Mount Intercooler w/ Bar + Plate Design
The cooling foundation of the Stage 4 package. This is not an off the shelf core adapted to fit. It is a purpose built bar and plate intercooler designed specifically for the FIAT 500 1.4L MultiAir Turbo, complete with custom brackets and two custom molded high quality silicone hoses.

Key Benefits
- Bar and plate design preferred over tube and fin for superior cooling ability, durability, and resistance to road debris  
- Increased surface area and reduced ducting compared to the factory system  
- Significantly lower inlet air temperatures and reduced heat soak  
- Improved turbo response and overall performance  
- Lighter weight than the stock intercooler setup  
- Custom molded silicone hoses that eliminate factory piping and virtually eliminate the chance of boost leaks  
- Direct bolt on design with no permanent modifications required  
- Fully reversible  

Fits
All FIAT 500 ABARTH models, all FIAT 500 Turbo models, and all FIAT 500 Turbo Pop/Lounge models from 2018 onward. This package will not fit EUuropean (EU) models.

SILA Concepts Titanium Turbo Thermal Blanket
The heat management specialist that rounds out Stage 4. This multi layer turbo blanket is specifically designed for the North American 1.4L MultiAir Turbo FIAT 500. It keeps heat inside the turbine housing where it belongs, improving spool, increasing boost pressure, and protecting surrounding components.

Key Features
- Designed specifically for the turbocharged FIAT 500 1.4L MultiAir  
- Not a generic blanket, but application specific fitment  
- Bolt on installation and fully reversible  
- Reduces under hood temperatures for better radiator performance and cooler intake charges  
- Helps the turbo spool quicker for improved performance  
- Protects wire harnesses, fittings, vacuum lines, and other vital under hood components  
- Multi layer construction: Titanium fabric outer shell, Calcium Magnesium Silicate Wool inner core, high temperature silica fabric  
- Stainless steel Capstan rivets  
- 3 year manufacturer warranty against defects  

Heat Tolerance Specs
- Interior Surface: Maximum 2325°F / 1270℃ | Continuous Use 1835°F / 1000℃  
- Exterior Surface: Direct Contact 1810°F / 989℃ | Radiant Heat 2475°F / 1378℃  

During the first few heat cycles the blanket will cure and may emit light smoke and leave a powdery residue (this is normal). After curing it loses some flexibility and should not be routinely removed.

The Complete Stage 4 Package
MADNESS GOPedal Plus gives you instant, customizable throttle response.  
MADNESS MAXBoost ECM delivers the real horsepower and torque to back it up.  
MADNESS MAXFlow Intake (Gloss Red) supplies the freer flowing, cooler air.  
MADNESS Monza Cat Back Exhaust lets the engine breathe out with authority and style.  
MADNESS Front Mount Intercooler keeps intake temperatures low and consistent.  
SILA Concepts Titanium Turbo Thermal Blanket retains heat in the turbo for faster spool while protecting the engine bay.

All electronic controls are managed from one single app, creating a seamless, integrated experience that no other company currently offers for the FIAT 500 1.4L Turbo.

This is Stage 4 done right! Safe, reversible, fully adjustable, and designed by enthusiasts who drive these cars every day.

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