Description
FiTech Go Street 400 HP Cast EFI Master Kit with Go Fuel In-Tank Pump
Self-tuning electronic fuel injection system paired with a 255 LPH in-tank fuel pump for engines up to 400 HP.
Product Overview
The FiTech Go Street 400 HP Master Kit (PN 36503) provides an all-in-one self-tuning electronic fuel injection upgrade designed to replace traditional 4-barrel carburetors. Built with an ECU mounted directly onto the cast aluminum throttle body, this unit eliminates external computer mounting hassle and complex wiring. Combined with the included Go Fuel 255 LPH in-tank regulated fuel pump module, this master kit supplies a steady 58 PSI fuel delivery through a simplified single-line system for reliable startups, smooth idling, and enhanced throttle response.
Key Features
- ☑ Supports naturally aspirated engines producing up to 400 HP with 4-barrel square bore flanges
- ☑ Integrated ECU mounted directly on the throttle body for clean engine bay aesthetics
- ☑ Self-learning speed density strategy continually updates fuel maps while driving
- ☑ Go Fuel 255 LPH in-tank regulated pump with -6 AN pressure port and 58 PSI internal regulator
- ☑ Full-color touchscreen handheld controller for guided initial setup and engine monitoring
- ☑ Four 62 lbs/hr fuel injectors with annular discharge technology for optimal fuel atomization
Technical Specifications
| Manufacturer | FiTech Fuel Injection |
|---|---|
| Part Number | 36503 |
| Maximum Horsepower | 400 HP |
| Injection Style | Throttle Body Injection (TBI) |
| Metering Style | Speed Density (MAP-N) |
| Throttle Body Mounting Flange | 4-Barrel Square Bore |
| Throttle Body Material & Finish | Cast Aluminum / Natural |
| Airflow Rating / Venturis | 850 CFM / 4 x 43mm Venturis |
| Injectors Included | 4 x 62 lbs/hr Injectors |
| Fuel Pump Included | Go Fuel 255 LPH In-Tank Regulated Pump Assembly |
| Fuel Pressure Regulator | Internal 4 Bar (58 PSI) Regulator |
| Fuel Tank Depth Range | Adjustable 6.5″ to 15″ |
| Timing Control Compatible | No |
What’s Included in the Box
- FiTech Go Street 400 HP Cast Aluminum Throttle Body Unit with Mounted ECU
- Go Fuel 255 LPH In-Tank Regulated Fuel Pump Module (-6 AN Port, 58 PSI Regulator)
- Touchscreen Handheld Controller with Cable & Windshield Mount
- Engine Wiring Harness & Sensor Suite (MAP, TPS, IAT, Coolant Temp)
- Bosch Wideband Oxygen Sensor & Weld-In Bung Kit
- Gaskets, Mounting Hardware, and Instructions
As an official stockist, JP Racing delivers genuine FiTech performance products with comprehensive technical support and fast dispatch throughout the UK.





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