Product Summary

Universal Fit, Throttle Body Injection Style, Natural

  • Comes with a handheld controller
  • Features a die cast construction with a beautiful finish
  • It has extreme self-learning for wide range super-fast dial in correction
  • The EZ-tach input, reads tach signal from Coil, HEI, MSD/CDI and many other brand ignitions
  • Pre-programmed with Bolt-N-Go technology for out of the box performance with no tuning required

Rebates Available

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Key Specs

MFG. Part #31003
Injection StyleThrottle Body
Injector Size56 lbs./hr.
Max Horsepower Rating400
ECM IncludedYes
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Need To Know

Quick and Easy Returns

Return Policy

FiTech 31003 Details

FiTech has realized that not everyone needs the biggest, baddest, highest-flowing fuel injection system you can get your hands on. Some of us just want a little more throttle response, be able to squeeze out better mileage and to make this change as easy as possible.

The FiTech Go Street EFI Series is the answer you have been looking for when it comes to performance, ease of setup, and reliability. As ready-to-run as they come but still providing the best in performance and economy, the all new FiTech Go Street EFI Series allows you to toss out that old leaky carburetor and bring new life to your favorite hotrod in the garage. This kit is designed for a simple, yet effective conversion to modern fuel injection technology at an incredibly affordable price.

This kit is also supplied with the FiTech Fuel Delivery kit for a simple and effective fuel system install. Included is a 255 L/ph EFI fuel pump, 20 feet of high pressure EFI grade hose, a 100 micron pre-filter and a 30 micron post filter, and associated push lock style fittings to simplify your fuel injection conversion. This system is designed for engines making up to 600 HP.

Kit Includes:

  • Die Cast Throttle Body
  • Handheld Controller
  • Windshield Mount
  • FiTech flow matched 62-lb injectors
  • Built-in pressure regulator
  • 2.5 BAR Internal MAP Sensor
  • Throttle Position Sensor
  • Idle Air Control
  • Coolant Temp Sensor
  • Wide band O2 Sensor
  • O2 Bung Kit

Quick Start Guide - Handheld Controller (PDF)

Handheld Controller Feature Definitions (PDF)

Features

  • Self Learning- Extreme self-learning for wide range super-fast dial in correction  
  • Suitable for crate engines and mild performance engines  
  • Pre-programmed with Bolt-N-Go technology for out of the box performance with no tuning required   
  • EZ-tach input, reads tach signal from: Coil, HEI, MSD/CDI and many other brand ignitions (no timing control)  
  • For non boosted engines- Normally aspirated applications only.   
  • Wide Band 4.2   
  • On board fuel pump driver
  • Annular discharge design
  • Hand Held tuning module for performance tuning
  • 1 Fan Control and AC Input (Kicks up Idle) 
  • FiTech flow matched 62-lb injectors 
  • Attractive Cast Finish
  • E85 compatible (30% reduction in HP capacity of fuel system and EFI)

Application

  • Chevrolet, Pontiac, Ford, Chrysler, Dodge, Plymouth, Etc. engines making 150 HP up to 400 HP with a 4-barrel intake manifold.
  • Replacement for any 4-barrel carburetors for engines with 150 HP up to 400 HP.
  • Use the same size air cleaner you would normally use for your 4-barrel carburetor.

Charts

Rebates

FiTech 10% Off Select Parts Labor Day Sale 2026

FiTech 10% Off Select Parts Labor Day Sale 2026FitechLaborDay10%OffSale2026

FiTech Fuel Injection is pleased to announce our Labor Day Specials, running from September 1, 2026, through September 30, 2026. For a limited time, customers can save over $350 on Ultra Port EFI systems and EFI Master Kits, making it the perfect opportunity to upgrade to modern fuel injection with improved performance and drivability. 10% off applicable parts. Sale prices are applicable only to purchases made within the specified sale period, from September 1, 2026, to September 30, 2026. No rainchecks or exceptions will be provided. Sale price is valid through September 30. Regular MAP Pricing will be reinforced on October 1, 2026. This sale cannot be combined with any other offers, discounts, or promotions. Co-ops will be honored.

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

FiTech 31003 Specifications

KEY SPECS
MFG. Part #31003
BrandFiTech
Injection StyleThrottle Body
Injector Size56 lbs./hr.
Max Horsepower Rating400
ECM IncludedYes
GENERAL
Carburetor Flange Type4-Barrel Square Bore
Fuel Injection System TypeSingle 4-Barrel Throttle Body (4150 Flange)
CFM850 CFM
User TunableYes
Self TuningYes
Injectors IncludedYes
Intake Manifold IncludedNo
Metering StyleSpeed density (Map-N) or speed throttle (Alpha-N)
EGRNo
Throttle Body IncludedYes
Throttle Body MaterialCast Aluminum
Throttle Body FinishNatural
Venturi Quantity4
Fuel Pump IncludedYes
Fuel Rails IncludedNo
Calibration Module IncludedYes
Wiring Harness IncludedYes
Fuel Pressure Regulator IncludedYes
Distributor IncludedNo
MAP Sensor IncludedYes
IAC Motor IncludedYes
IAT Sensor IncludedYes
TPS Sensor IncludedYes
Use with Power AdderNo
Venturi Diameter44.45mm
Flow Rating255
NotesKit includes an inline fuel pump kit.
GTIN Code854549007026
Sold in QuantityKit
Transmission Controller IncludedNo
Multi-Port Fuel Rails IncludedNo
Timing Control CompatibleNo

Ratings & Reviews

4

2 Reviews

Overall Assessment

Customer reviews confirm the easy installation of the product, enhancing its practicality. A noticeable feature is its usability for older models, specifically Dodge pickups. However, there were issues with the in-line pump initially, but the product's quality seems promising as the company promptly addressed the issue, promising to send a new, presumably better one. This demonstrates noteworthy customer satisfaction, setting the product apart from its competitors.

4

2 reviews

5

1

4

0

3

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1

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Absolutley

5.0

5 months ago

Customs

Red Springs NC

Verified

easy seamless installation

Would Recommend

I'm deciding if I would buy this again or not.

3.0

6 years ago

Big Daddy Cox

Lincoln

Verified

I'm using this on an older Dodge pickup, the in line pump seems to have issues right out of the box. However Fitech's customer service is sending me a new one. I am waiting to see how soon it comes and if it's any better.

Showing 2 of 2 reviews

Questions & Answers

2 Questions • 2 Answers

Is the throttle linkage 1988 700r4 TV cable compatible?

by Tom

• a year ago

1 answer

When my street rod is parked for any length of time, I hit the kill switch, will this unit have to learn all over again every time?

by Chuck

• 8 years ago

1 answer

2 of 2 questions shown

Customer Impersonation Script