Vortech Supercharging System w/ V-2 Si-Trim & Charge Cooler - Polished (1999 Mustang GT 4.6L 2V) 4FL218-038SQ
Polished V-2 Si-Trim High-Output Supercharger System for 1999 Mustang GT
The Vortech Supercharging System with V-2 Si-Trim and integrated charge cooler (PN 4FL218-038SQ) is a complete, CARB-approved high-output centrifugal supercharger system engineered specifically for the 1999 Ford Mustang GT equipped with the 4.6L 2-valve engine. Featuring a show-quality polished finish, this configuration combines Vortech's proven, engine oil-fed V-2 Si-Trim with an air-to-water, dual-pass charge cooling system to deliver maximum power with consistent thermal control.
As a charge-cooled, increased-boost setup, this system elevates performance from 260 horsepower to 402 horsepower and torque from 302 lb-ft to 400 lb-ft on a stock engine, while retaining the smooth, linear power delivery Vortech centrifugal systems are known for.
V-2 Si-Trim Supercharger Technology
The V-2 Si-Trim centrifugal supercharger is an engine oil-fed unit that utilizes Vortech's SQ (Super Quiet) gear-driven technology for nearly silent operation and exceptional durability. Developed in Vortech's supercharger test cell, the high-efficiency impeller and housing design delivers strong airflow with reduced heat generation.
Integrated oil feed and oil drain assemblies provide reliable lubrication and cooling under sustained boost, making the V-2 Si-Trim a trusted choice for long-term, high-performance street use.
Integrated Air-to-Water Charge Cooling
This system includes a fully integrated air-to-water, dual-pass charge cooler engineered to significantly reduce intake air temperatures under boost. The closed-loop, maintenance-free design allows for additional horsepower gains and improved consistency during sustained high-load operation.
Note: Charge-cooled systems require a battery relocation kit (PN 8N150-010, sold separately).
Fuel Management & System Integration
This complete supercharging system includes a fuel management upgrade designed specifically for stock engine configurations. Vortech supplies calibration and components intended for factory engines running stock exhaust systems or most aftermarket cat-back exhausts.
Important: Vortech does not provide tuning for vehicles equipped with aftermarket throttle bodies, cold air intakes, headers, off-road mid-pipes, or other engine modifications. Modified vehicles will require custom tuning, and not all ECU box codes are supported.
Included Components
- V-2 Si-Trim centrifugal supercharger with engine oil feed and drain
- High-efficiency impeller and housing assembly
- Integrated air-to-water, dual-pass charge cooler system
- 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
- Battery relocation kit required for charge-cooled systems
- Custom tuning required for modified engines or unsupported ECU box codes
Quick Specs
- Manufacturer: Vortech Superchargers
- Part Number: 4FL218-038SQ
- Application: 1999 Ford Mustang GT 4.6L 2V
- Supercharger: V-2 Si-Trim
- Lubrication: Engine oil-fed
- Finish: Polished
- Cooling: Air-to-water, dual-pass charge cooler
- Horsepower Gain: 260 HP to 402 HP
- Torque Gain: 302 lb-ft to 400 lb-ft
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 differentiates this system from non-charge-cooled kits?
This configuration includes an integrated air-to-water charge cooler, enabling higher boost levels and increased horsepower with improved thermal stability. - 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 high-output modular Mustang builds. Our team can help verify ECU compatibility, explain charge-cooled system requirements, and ensure your polished V-2 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
