Regan Brown
Many SRT-4 owners believe that they need to install larger fuel injectors to increase horsepower. However, this is not always the case, as the SRT-4 runs very rich under full throttle. Therefore, unless you have changed the turbo, you typically do not need to change the injectors. If you do decide to change the injectors, you will also need to flash the PCM to ensure it has the right calibration to properly use the injectors. Without this, your SRT-4 will run super rich and you will lose a lot of horsepower.
If you are looking to achieve 500hp with your SRT-4, you may want to consider the following fuel injectors.
| Characteristics | Values |
|---|---|
| Fuel Injector Brands | DeatschWerks, AGP Turbochargers, Fuel Injector Clinic |
| Fuel Injector Models | 525cc, 650cc, 590cc, 625cc, 680cc, 682cc, 750cc, 775cc, 1000cc, 1200cc, 1400cc, 1650cc, 2150cc |
| Compatible Vehicles | Dodge Caliber SRT-4, Dodge Neon SRT-4, Dodge SRT-4, PT Cruiser |
| Additional Requirements | Diablosport/SCT tuner, custom tune, return line kit, Mopar stage 2/3 PCM |
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What You'll Learn
Deatschwerks Fuel Injectors
The Deatschwerks 590cc injector, rated at 48psi, is a popular choice for the Neon SRT-4 with a 58psi fuel system. When installed, it flows 690cc, matching the output of the Mopar stage 2/3 injector, making it a perfect replacement. However, it is recommended to consult a tuner for their recommended injector size.
For those seeking higher horsepower outputs, Deatschwerks offers larger injectors. The 750cc injectors can support up to 400 horsepower in the Neon SRT-4, while the 1000cc injectors can handle 400-550hp. These injectors are often paired with a return line kit or a custom Diablosport flash as the factory PCM cannot properly run these larger injectors.
It is important to note that without a custom tune or a return line, the car's fuel system will run rich, resulting in a loss of power. Therefore, it is crucial to consider the necessary modifications and consult with experts before installing Deatschwerks Fuel Injectors to ensure optimal performance and avoid potential issues.
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Mopar Performance Stage 2/3 Fuel Injectors
The Mopar Performance Stage 2/3 Fuel Injectors are designed for the 03-05 Neon SRT-4. They are high-performance fuel injectors that will plug into the factory harness of all SRT-4s. However, they will not run correctly without a Mopar Stage 2 or 3 PCM. If your vehicle does not have the Mopar PCM, you will need to purchase a Diablosport tuner and perform a custom tune to ensure the injectors idle and function correctly.
The Stage 2 and 3 kits both use the same size injectors, which are 682cc @ 58 psi. It is important to ensure that you have the correct tune installed that adjusts the fuelling for your car before changing injectors. Without the appropriate tune, your car will run rich and you may lose power.
Mopar Performance fuel injectors are known for their high quality, reliability, and consistency. They are designed to fit both the engine's physical requirements and its fuel needs. When selecting the correct fuel injector, it is essential to consider the engine's horsepower, number of fuel injectors, induction type, fuel type, BSFC (brake-specific fuel consumption), and injector max duty cycle.
The Mopar Performance Stage 2/3 Fuel Injectors are priced between $95 and $105 each, depending on the type and size. They are a good option for those seeking high-quality fuel injectors for their SRT-4 engine, but it is important to ensure that you have the necessary components and tunes to utilise them effectively.
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AGP Turbochargers
When it comes to upgrading your SRT 4 to handle 500 horsepower, one of the key components to consider is a set of high-performance fuel injectors. AGP Turbochargers offers a range of options specifically designed to support your high-performance goals.
The first option is the AGP 1000cc Fuel Injectors. These injectors are a great choice for those looking to make up to 400 wheel horsepower. They provide a significant increase in flow rate over stock injectors, ensuring your engine receives the additional fuel it needs to make more power. These injectors feature a high-quality construction with a stainless steel body and precision-machined internals, ensuring reliable performance and consistent fuel delivery.
If you're aiming for the full 500 horsepower mark, AGP offers their 1600cc Fuel Injectors. These injectors are specifically designed for high-boost applications and can support up to 550 wheel horsepower. They provide an even greater flow rate, ensuring your engine has more than enough fuel to reach your power goals. The 1600cc injectors are also constructed with the same high-quality materials and precision manufacturing processes as their 1000cc counterparts, ensuring reliable performance.
Additionally, AGP provides optional fuel rail adapters, which are designed to work seamlessly with their high-performance fuel injectors. These adapters ensure a proper fit and easy installation, making the process more accessible and efficient. With these adapters, you won't have to worry about any fitment issues or modifications, allowing you to focus on enjoying the enhanced performance of your SRT 4.
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Dodge SRT-4 Fuel Injector Clinic Injector Set
The Dodge SRT-4 Fuel Injector Clinic Injector Set is a high-performance fuel injector set that utilizes the latest injector technology. The injectors are precisely flow-matched to within 1% and are easy to tune, providing great drivability. Each injector within the set is individually numbered, and the results for each injector are listed on a detailed flow sheet included with the set.
The Fuel Injector Clinic offers several options for the Dodge SRT-4 injector set, ranging from 525cc to 2150cc in capacity. The 525cc, 650cc, and 775cc options are high-impedance ball and seat injectors that utilize the latest technology and provide great linearity and short pulse width repeatability. The 1000cc option is also a high-impedance ball and seat injector that utilizes the latest injector technology and features state-of-the-art matching with Data Match Technology. This set is precisely matched using Fuel Injector Clinic's proprietary Data Match Technology, making them easy to tune and providing great drivability.
The larger capacity options, 1200cc, 1440cc, 1650cc, and 2150cc, are also high-impedance ball and seat injectors that utilize the latest injector technology. These injectors are designed to provide superior performance and drivability for high-performance applications.
It is important to note that when upgrading to larger fuel injectors, it is essential to have a custom tune or a return line to control fuel delivery. Without proper tuning or a return line, the vehicle may experience a significant loss in power and run extremely rich. Additionally, it is recommended to consult with a professional or tuner to determine the appropriate injector size for your specific application.
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Diablosport/SCT Tuner
When installing larger injectors, such as the Deatschwerks 590cc injector, it is essential to have a custom tune like the Diablosport tuner or a return line kit to control fuel pressure. Without these, the car will run rich, and power will be lost. The Diablosport tuner ensures that the larger injectors perform optimally and that the engine receives the correct amount of fuel.
The Diablosport tuner is also beneficial for those running E85 fuel in their SRT4. With the tuner, users can properly calibrate their injectors to deliver the required fuel flow for E85, ensuring smooth performance and avoiding lean issues.
Compared to the SCT tuner, some users have noted that the Diablosport tuner is superior for Mopar tuning. However, both devices have their advantages, and the SCT tuner is still a popular choice for many SRT-4 owners, offering easy remote tuning and the ability to hold multiple tunes. Ultimately, both the Diablosport and SCT tuners are viable options for custom tuning and injector upgrades on the SRT-4 platform, with Diablosport appearing to be more tailored to Mopar engines.
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Frequently asked questions
To achieve 500hp, you can use 1200cc or 1400cc PNP Injectors. These injectors are perfect for making 500hp and can be used with e85 fuel.
There are a variety of fuel injectors that can be used with the SRT-4 platform. DeatschWerks, Mopar Performance, and Fuel Injector Clinic all make fuel injectors that are compatible with the SRT-4.
The size of the fuel injectors you need depends on the horsepower you want to achieve. For 400 horsepower, you can use 750cc injectors. For 400-550hp, you can use 1000cc injectors. And for 500-650 hp, you can use 1300cc injectors.
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