Vortech Supercharging System w/ V-3 Si-Trim - Polished (1999 Mustang GT 4.6L 2V) 4FL218-018L
Polished V-3 Si-Trim Supercharger System for 1999 Mustang GT 4.6L 2V
The Vortech Supercharging System with V-3 Si-Trim (PN 4FL218-018L) is a complete, CARB-approved centrifugal supercharger system designed specifically for the 1999 Ford Mustang GT equipped with the 4.6L 2-valve engine. Featuring a show-quality polished finish, this system delivers proven Vortech performance while maintaining factory-like drivability and emissions compliance.
On a stock 4.6L 2V Mustang GT, this system safely increases output from 260 horsepower to 364 horsepower and torque from 302 lb-ft to 371 lb-ft. Vortech's centrifugal design provides smooth, linear boost that builds with RPM, making it ideal for street-driven performance Mustangs.
V-3 Si-Trim Supercharger Technology
The V-3 Si-Trim centrifugal supercharger utilizes Vortech's advanced impeller and housing design developed in their in-house supercharger test cell. Unlike engine oil-fed units, the V-3 features self-contained internal lubrication, eliminating the need for oil feed and drain lines while reducing installation complexity and ongoing maintenance.
Vortech's SQ (Super Quiet) gear-driven design ensures nearly silent operation with exceptional long-term reliability - perfect for daily-driven Mustangs that demand dependable power.
Fuel Management & System Integration
This complete supercharger system includes a fuel management upgrade engineered for stock engine configurations. Vortech supplies components and calibration intended for vehicles retaining factory engines with stock exhaust systems or most aftermarket cat-back exhausts.
Important: Vortech does not provide tuning for vehicles with additional engine modifications such as aftermarket throttle bodies, cold air intakes, headers, or off-road mid-pipes. Modified vehicles will require custom tuning, and not all ECU box codes are supported.
High Output System Option
Vortech also offers a high-output supercharger system configuration featuring a fully integrated air-to-water, dual-pass charge cooler. High-output systems increase horsepower from 260 to 402 and torque from 302 lb-ft to 400 lb-ft, while maintaining a maintenance-free charge cooling design.
Charge-cooled systems require a battery relocation kit (PN 8N150-010, sold separately).
Included Components
- V-3 Si-Trim centrifugal supercharger with self-contained lubrication
- High-efficiency impeller and housing assembly
- Fuel management upgrade including:
- High-flow fuel pump
- High-capacity fuel injectors
- ECM chip calibration (for supported stock applications)
- OEM-style aluminum supercharger mounting bracket for factory-installed appearance
- High-flow bypass valve for surge-free compressor operation
- Heat-resistant silicone inlet and discharge sleeves
- Premium stainless steel clamps
- All required mounting hardware
Installation Notes
- Estimated installation time: approximately 12 hours
- Professional installation recommended
- Custom tuning required for modified engines or unsupported ECU box codes
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 4FL218-018L
- Application: 1999 Ford Mustang GT 4.6L 2V
- Supercharger: V-3 Si-Trim
- Lubrication: Self-contained internal oiling
- Finish: Polished
- Horsepower Gain: 260 HP to 364 HP (standard system)
- Torque Gain: 302 lb-ft to 371 lb-ft (standard system)
Emissions & CARB Compliance
- CARB compliant complete system
- Smog legal in California
- CARB Executive Order: D-213-17
Additional Information
- Hardware kit PN 4FL100-001 available for spare or replacement supercharger mounting hardware
- Not all ECU box codes are supported by Vortech tuning
- Unsupported ECU code examples: RKN, MDE, PTP, JRX
- We strongly recommend verifying ECU box code prior to purchase
FAQs
- What is the advantage of the V-3 Si-Trim over the V-2?
The V-3 Si-Trim features self-contained internal lubrication, eliminating the need for engine oil feed and drain lines while simplifying installation and maintenance. - Is this system street legal in California?
Yes. This complete system is CARB compliant and covered under Executive Order D-213-17.
Fitment
- 1999 Ford Mustang GT 4.6L 2V
Why Buy from Beefcake Racing?
Beefcake Racing is an authorized Vortech Superchargers dealer with extensive experience supporting modular Mustang platforms. Our team can help verify ECU compatibility, explain system options, and ensure your polished V-3 Si-Trim setup delivers reliable, street-legal performance.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
