Air and Fuel› Superchargers, Turbochargers and Components

MuchBoost

FCA GMR-T4 Hybrid Upgraded Turbocharger

$1,580.00

SKU: 871794-5003S

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Overview

The MuchBoost FCA GMR-T4 Hybrid Upgraded Turbocharger is designed to maximize your engine's output. Based on an original Garrett turbocharger, this unit features a custom billet compressor wheel (6+6 blades) and an enlarged GT28 turbine wheel, ensuring 100% P&P installation. It is engineered for Alfa Romeo Giulia, Stelvio, and Jeep Cherokee models equipped with 2.0T TBi/T-GDI engines producing 200-280hp.
Show original supplier description
The MuchBoost FCA GMR-T4 Hybrid Upgraded Turbocharger is engineered for enthusiasts seeking significant power gains from their 2.0T TBi/T-GDI engines. This hybrid turbo is built upon an original Garrett turbocharger, ensuring a direct bolt-on (P&P) installation. It features a custom billet compressor wheel with a 6+6 blade design and an enlarged GT28 turbine wheel, depending on the selected configuration. This turbocharger is compatible with Alfa Romeo Giulia and Stelvio, as well as Jeep Cherokee models utilizing the 2.0T TBi/T-GDI engine producing between 200 and 280 horsepower. MuchBoost offers four distinct modification options, allowing users to achieve power outputs ranging from approximately 330HP to 430HP at the crank. Each option builds upon the previous one with progressively larger billet compressor wheels and turbine wheels, along with precisely machined housings. The base 330HP option includes a custom billet compressor wheel, an upgraded journal bearing system for higher boost tolerance, and a clipped and lightened turbine wheel. Higher output versions incorporate larger billet compressor and turbine wheels for increased flow and lower exhaust temperatures. All units feature genuine Garrett components and undergo high-speed balancing for optimal performance and reliability. To fully realize the potential of this hybrid turbo, MuchBoost recommends upgrading supporting systems such as the fuel, exhaust, and cooling systems, as well as the clutch. Individual ECU remapping is essential. The product page details several example projects showcasing impressive horsepower and torque figures achieved with this turbocharger, including dyno results at the wheels.
Vehicle Symptoms
  • Sluggish acceleration on highway
  • Turbo lag from stop
  • Not enough power for passing
  • Check engine light with boost codes
  • Poor throttle response at low RPM
Diagnostic Codes
  • P0234 – Engine Overboost Condition
  • P0236 – Turbocharger/Supercharger Boost Sensor A Range/Perf
  • P0243 – Turbocharger Wastegate Solenoid A Malf
Relevant Conversations
  • MuchBoost GMR-T4 hybrid turbo upgrade review
  • 2.0T TBi turbo upgrade for Alfa Romeo Giulia
  • Jeep Cherokee 2.0T turbo lag fix
  • P0234 code on FCA 2.0T engine
  • MuchBoost vs Garrett GMR-T4 turbo
  • how to install upgraded turbo on Stelvio
  • best bolt-on turbo for 2.0T T-GDI
  • MuchBoost 871794-5003S specs
  • co-purchase for turbo upgrade: intercooler and downpipe
  • forum: Giulia owner looking for more power without tune

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

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Specifications

BrandMuchBoost
Part Number871794-5003S
CategoryAir and Fuel

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