Constructed Using All 409 Stainless Steel. 100% Welded Construction For Lifelong durability. Unrestricted Straight-Through Design. Dyno Proven To Flow Up To 2000 SCFM And Support Up To 2000 HP. Exclusive Continuous Roving Fiberglass Technology. CRF Technology Absorbs Unwanted Interior Resonance. Maintains A Deep Performance Tone. Straight-Through Design Ensures Unrestricted Exhaust Flow. Reduces Back pressure. Proudly Manufactured In The USA. Limited Lifetime Warranty.
Sounds great on my 7.3 idi non turbo. Good flow with the 3 inch. If you keep off the pedal its pretty quiet and when you put your foot into it you get that nice deep sound.