GMC/Chevy, 1999-2006, 5.3L – Stainless - MPI Exhaust Cat-Back Dual Exhaust Kits

MPI Exhaust Kit for GM 5.3L Gas Overview

The MPI Exhaust Kit is a Cat-back Exhaust system specifically engineered for Chevy/GMC trucks equipped with a 5.3L engine. It enhances overall vehicle performance and towing power, offering notable improvements in horsepower, torque, and fuel efficiency, verified through extensive dyno testing. Designed for easy DIY installation, the kit leverages 35 years of exhaust experience and includes all necessary hardware for installation. These kits are 50-state emission legal and do not void the factory warranty.

Features:

• Patented Pulse Chamber Technology: Our PCT is utilized to eliminate all in-cab drones, Even while towing!! backed with our Guaranteed No Drone.  
• High-Quality Materials: The MPI Stainless kit features durable 409 Stainless components, including hangers, clamps, tubing, and mufflers, with 304 Stainless tips.
• Easy Installation: No welding is needed. It uses factory hanger locations and includes detailed trimming instructions to accommodate all wheelbases.

Performance Benefits:

• Horsepower Gains: + 14.9 hp @ 5,250 RPM 
• Torque Gains: + 16.12 lb-ft @ 5,250 RPM 
• Fuel Efficiency: Average improvement of 2-4 MPG
• Sound Quality: Aggressive yet refined exhaust tone with no in-cab droning
• Heat: Reduces under-hood manifold temperature by 150 degrees

Fitment:

• Make: Chevy or GMC
• Model Years: 1999 – 2006
• Chassis: 1500
• Engine: 4.8L and 5.3L  
• Wheelbase: Compatible with all wheelbases

Detailed Specifications

• Material: 409 Stainless
• Installation: Clamp-together system, direct fitment to factory hanger locations.
• Hardware: Includes all necessary hardware for installation.
• Design: Compatible with the factory spare tire.
• Tubing Size: Dyno-proven optimal size for performance.
• Tips: Large 3.5" x 12" long tips for a refined appearance.

Patented Technology

• Exhaust Pulse Chamber (Pat. 11713700): Guaranteed no drone and optimizes exhaust flow and overall performance.

Warranty

• Stainless Warranty: Limited Lifetime Warranty on all products