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Fitech Fuel Injection
FiTech Go Street EFI 400 HP Self-Tuning Fuel Injection Systems with Force 35203 System, Self Tuning, System, Kit
fif35203
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FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 70003 System, EFI, HP, LS1/LS2/LS6, Without Transmission Controller, Kit
FiTech Ultimate LS EFI 750 HP Fuel Injection Systems 70003 System, EFI, HP, LS1/LS2/LS6, Without Transmission Controller, Kit
A$4,494.61
IN STOCK! Est Ship 4-7 days.
This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description
IMPORTANT NOTICE: Note for Australian & European MarketsThis item was designed and engineered in the USA for US domestic vehicles. OBD tools, ECUs, dongles, programmers, and tuners may have limited compatibility with vehicles outside the USA due to regional differences in emission standards and system configurations. Some features and functionality may vary depending on the vehicle and location. Please review the product details and images to ensure it meets your needs. For clarification or assistance, feel free to contact a StreetFX agent. Note: Returns are not accepted for special order products.(keyword: controller)Images are supplied by the manufacturer and may be generic. While all efforts are made to provide accurate pictures, there may be differences in the actual product, such as colour, quantity, version, or included components. Please carefully review the description and specifications for details on inclusions or any variations. Some items may be sold individually or in sets, and images may occasionally depict additional products or quantities not included in your purchase. For assistance or clarification, please contact customer support.Reference Information Reference Data (Provide these details to our support team) Brand Name/s Fitech Fuel Injection StreetFX SKU fif70003 SFX Item ID 5178570 Accounting SKU fif-70003 Manufacturer SKU 70003 Manufacturer UPC 854549007385 Alternative References 70003, FIF-70003, FIT70003
Fuel Injection - Ultimate EFI LS - Multi Port - 55 lb/hr Injectors - Aluminum - Black Anodized - LS1 / LS2 / LS6 - GM LS-Series - Kit
Data: v2 - Desc: v4.2 - Upd: 2026-10-14 03:31:24
Part Type
Ultimate EFI LS Kit 750 HP w/o Trans Control
Specifications
Fuel Injection System, Ultimate LS EFI, 750 HP, LS1/LS2/LS6, Without Transmission Controller, Kit
LS motors have a great base for power, but what they really need is something wicked to wake them up. FiTech LS EFI 750 HP fuel injection systems have alarming power, exciting style, and will take you and your vehicle to the edge. FiTech fabricated many aluminum parts for these systems, including the low-profile 102mm billet throttle body, high-volume billet fuel rails, and an intake manifold with a 1,500 to 6,500 rpm powerband and 3mm construction.
Sequential spark and fuel control mate the 55 lbs./hr. injectors, plug-and-play wiring harness, and color touch screen self-learning ECU. This allows you to program two fan control outputs, most tach and speedometer output drivers, and target AFR and timing on-the-fly. A suction cup mounting bracket puts the controller at your fingertips and allows for impressive visual aids.
The optional transmission control feature is suitable for 4L60, 4L65, 4L70, or 4L80 GM transmissions. Awaken the beast and feed its needs with an ultra-performing FiTech LS EFI 750 HP fuel injection system with transmission controller.
Additional features:
• Programmable touch screen hand-held controller with data log features
• 3-bar MAP sensor automatically detects up to 30 psi boost
• AN fittings and fuel crossover
• 24X and 58X crank and cam-compatible and works with custom cams
• Black anodized aluminum parts for style and corrosion resistance
• High-flow, cable-operated throttle body
• Dual Bosch wideband with dual trim controlled
• Knock sensor control
• Stainless oxygen sensor bung
• Compatible with car and truck coils
• Designed for applications making at least 6 inches of vacuum at idle
| Product Attributes | |
|---|---|
| Brand | FiTech Fuel Injection |
| Manufacturer's Part Number | 70003 |
| Part Type | Fuel Injection Systems |
| Product Line | FiTech Ultimate LS EFI 750 HP Fuel Injection Systems |
| UPC | 854549007385 |
| Fuel Injection Style | Multi-port |
| Fuel Injection System Type | Multi-port Throttle Body |
| Maximum Horsepower with Gas | 750 |
| Timing Control Compatible | Yes |
| ECM Included | Yes |
| Self Tuning | Yes |
| User Tunable | Yes |
| Fuel System Included | None |
| Ignition System Included | None |
| Power Distribution Included | None |
| User Interface Included | 4.5 in. display |
| EGR | No |
| Transmission Controller Included | No |
| Metering Style | Speed density (Map-N) or speed throttle (Alpha-N) |
| Intake Material | Aluminum |
| Intake Color | Black |
| Engine Block Deck Height | Standard deck |
| Multi-Port Fuel Rails Included | Yes |
| Throttle Body Included | Yes |
| Venturi Quantity | 1 |
| Venturi Diameter (mm) | 102.00mm |
| Airflow Rate (cfm) | 1,000 cfm |
| Throttle Body Material | Billet aluminum |
| Throttle Body Color | Black |
| Injectors Included | Yes |
| Injector Size (lbs/hr) | 55 lbs./hr. |
| Calibration Module Included | Yes |
| Wiring Harness Included | Yes |
| Oxygen Sensor Included | Yes |
| Fuel Pressure Regulator Included | No |
| MAP Sensor Included | Yes |
| IAT Sensor Included | Yes |
| TPS Sensor Included | Yes |
| IAC Motor Included | Yes |
| Quantity | Sold as a kit. |
| Special Attention | This kit must be used with the factory coil pack sub-harness. |
Reference Information
| Brand Name/s | Fitech Fuel Injection |
|---|---|
| StreetFX SKU | fif70003 |
| SFX Item ID | 5178570 |
| Supplier Item Code | 5178570 |
| Manufacturer SKU | 70003 |
| Manufacturer UPC | 854549007385 |
| Alternative References | FIT70003, LS1/LS2/LS6 |
Compatibility
No specific fitment data available for this part. For clarification, please contact us.
Detailed Compatibility
| Application Data | |
|---|---|
| Universal | No |
| Make | CHEVROLET |
| Beginning Year | 1997 |
| Ending Year | 2004 |
| Engine Type | V8 |
| Engine Family | Chevy small block Gen III/IV (LS-based engines) |
| Engine Size | 5.7L/350 |
| Fuel Type | ALCOHOL |
| Cylinder Head Type | Cathedral port |
| Universal | No |
| Make | CHEVROLET |
| Beginning Year | 1997 |
| Ending Year | 2004 |
| Engine Type | V8 |
| Engine Family | Chevy small block Gen III/IV (LS-based engines) |
| Engine Size | 5.7L/350 |
| Fuel Type | FLEX |
| Cylinder Head Type | Cathedral port |
| Application Notes | E85 requires 30 percent more fuel to equal the same power level, confirm your EFI system is capable of flowing the extra E85 to reach horsepower goals. |
| Universal | No |
| Make | CHEVROLET |
| Beginning Year | 1997 |
| Ending Year | 2004 |
| Engine Type | V8 |
| Engine Family | Chevy small block Gen III/IV (LS-based engines) |
| Engine Size | 5.7L/350 |
| Fuel Type | GAS |
| Cylinder Head Type | Cathedral port |
This may not be an exhaustive list of compatible vehicles. Please reach out to one of our representatives if you are unsure or do not see your vehicle here.
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