* Engine Modifications: The stock internals (pistons, connecting rods, crankshaft) are not designed to withstand the increased pressure and stress a turbocharger will introduce. You'll likely need forged internals for reliability. This is expensive.
* Fuel System Upgrades: The stock fuel injectors and fuel pump won't be able to deliver enough fuel to support the increased power. Upgraded injectors, a high-flow fuel pump, and potentially a fuel pressure regulator are necessary.
* Exhaust System: A free-flowing exhaust system is crucial to allow the turbocharged exhaust gases to escape efficiently. This usually means a custom-fabricated downpipe, exhaust manifold, and possibly a cat-back system.
* Intake System: A high-flow intake system is needed to supply the engine with sufficient air.
* Turbocharger Kit: You'll need a turbocharger kit specifically designed (or adaptable) for the 2.4L engine. Pre-made kits for this specific application are unlikely to exist; it would require a custom setup.
* Intercooler: An intercooler is essential to cool the compressed air entering the engine, preventing detonation and increasing efficiency.
* Engine Management System (ECU): The stock ECU will need to be retuned or replaced with an aftermarket ECU that can manage the increased boost pressure, fuel delivery, and ignition timing. This typically requires professional tuning.
* Transmission: The stock automatic transmission may not be able to handle the increased power and torque. A stronger transmission or upgrades to the existing one might be necessary, adding further complexity and cost.
Cost and Complexity: The total cost of a turbocharger installation on a 2004 Dodge Stratus SXT would likely be several thousand dollars, easily exceeding the value of the vehicle itself. The project is very complex and requires significant mechanical knowledge and expertise. Unless you have extensive experience with engine building and tuning, it's strongly recommended that you seek the services of a professional mechanic specializing in turbocharger installations.
In short: While technically possible, it's a very expensive, time-consuming, and complex project with considerable risk. It's far from a simple modification and would require a substantial investment in parts and labor. You might be better off looking for a different vehicle that already has a turbocharged engine.
