Royal Flush Throttle Body EFI System for 4150-Flange Intake Manifolds

Name: Royal Flush Throttle Body EFI System for 4150-Flange Intake Manifolds
Brand: ACES FUEL INJECTION
SKU: 021-AS2014B6
Price: 1289.99 USD
Availability: InStock

^$1,289⁹⁹

Ships on 09/15/2026

Lowest Price Guarantee

Self-tuning Royal Flush throttle body EFI system for carb-to-EFI conversions

Fits 4150-Flange Manifolds

Up to 650 HP NA, 575 HP Boosted

Four 100 lb/hr Injectors

Self-Learning ECU, 5 In Handheld

This standalone EFI system replaces an aging carburetor with a modern throttle body built for 4150-flange manifolds. The 32-bit ECU and integrated CDI ignition tune fuel and spark automatically.

What's Included:

The throttle body integrates the four 100 lb/hr injectors along with the TPS, MAP, and IAT sensors.
A 3-bar TMAP sensor is boost ready for turbocharged and supercharged applications.
The included 5 in touchscreen handheld provides a built-in GPS speedometer and a no-laptop calibration wizard.
The wiring harness and wideband oxygen sensor are matched to the ECU for a plug-and-play installation.

Part TypeFuel Injection System

BrandACES FUEL INJECTION

Part CategoryPerformance Parts

Injector Quantity4

Fuel Injection TypeThrottle Body

Forced Induction SupportYes

Distributor IncludedNo

Part FitmentSemi Universal

Self-TuningYes

Maximum Horsepower650 HP

Can-Bus SupportYes

Package Qty1

No Questions

No Reviews

Some parts are not legal for use in California or other states with similar laws / regulations

Royal Flush Throttle Body EFI System for 4150-Flange Intake Manifolds

What's Included:

⚠️ Warning

Motor Vehicles

Tools

Electrical Cords