Smart Fortwo 453 Stage 2 Turbo Kit – Up to 140HP
The Stage 2 Turbo Kit for Smart Fortwo 453 is a complete hardware and software upgrade package, developed by Smart HarD TuNinG (S.H.T Performance).
Engineered to deliver up to 140HP, this setup transforms the factory configuration into a significantly more responsive and performance-oriented system, while maintaining reliability and proper thermal management.
Compatible with:
• Smart Fortwo 453 Turbo (90HP)
• Smart Fortwo 453 Brabus (109HP)
Each setup is individually calibrated based on engine version.
STAGE 2 Kit Components
•Performance exhaust system
•Decat downpipe (high-flow)
•Hybrid turbocharger (Stage 2 specification)
•Upgraded fuel injectors
•Flow throttle adapter (42mm)
•Performance ignition coils SHT.148s-R045
•NGK Iridium spark plugs
•Performance silicone hoses (boost system)
•High-flow air filter
Optional:
Race intake system (direct turbo inlet with pipe)
Charge Cooling System Upgrade
A dedicated charge cooling circuit has been developed, completely independent from the engine cooling system.
This configuration ensures:
•Lower intake air temperatures
•More stable performance under load
•Improved efficiency and consistency
Unlike factory setups, the charge cooler is not affected by engine coolant heat, allowing for better thermal control during high-performance driving.
Performance Results
•Up to 140HP output
•Increased torque and acceleration
•Faster turbo spool and boost response
•Strong mid-range performance
•Improved top-end power delivery
ECU & TCU Calibration
•Stage 2 ECU remapping (engine management optimization)
•TCU remapping (transmission optimization)
TCU upgrade includes:
•Removal of factory torque limitations
•Increased torque capacity
•Faster gear shifts
•Optimized shift behavior (Brabus-style response)
Engineering Approach
This kit is developed as a complete system, combining airflow, fuel, boost and thermal management into one balanced solution.
Focus areas:
•Reliability under increased boost
•Stable and repeatable performance
•Smooth drivability
•Long-term durability
S.H.T Performance – Greece
Professional Smart tuning solutions with international experience and proven results
Stage 2 is the ideal upgrade for customers seeking real performance gains, reaching up to 140HP with a fully engineered and reliable setup.
Contact us for installation, international shipping and custom configurations
Available by Smart HarD TuNinG
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