MagnaFlow Cat-Back Exhaust for 1998-2002 Honda Accord 3.0L

Quick answer

If your 1998-2002 Honda Accord 3.0L V6 sounds raspy, feels flat on acceleration, or you simply want a deeper exhaust note with real performance gains, the MagnaFlow 15640 Street Series Cat-Back system is a direct-fit upgrade that delivers a dyno-proven power increase and that signature MagnaFlow tone.

Diagnosis: Is a cat-back upgrade right for your Accord?

• Symptom: Your 1998-2002 Accord 3.0L V6 sounds raspy, tinny, or just plain weak. Acceleration feels flat above 4,000 RPM, or you want a more aggressive exhaust note without going to a full header-back system.
• Likely cause: The factory exhaust system uses crimped bends and restrictive mufflers that choke the V6's airflow. This limits peak power and produces a strained, uninspiring sound. The system is also likely 20+ years old, meaning internal baffles may be deteriorating. Inspect the existing exhaust for rust holes or broken hangers before deciding on a cat-back upgrade. A system with physical damage needs replacement regardless of sound preference.
• Corrective action: Install the MagnaFlow 15640 Street Series Cat-Back system. It bolts directly to the factory catalytic converter location using the existing hangers. The mandrel-bent 2.25-inch piping and three straight-through mufflers reduce backpressure, add dyno-proven power, and produce a deep, resonant exhaust note. Check local noise ordinances if you live in an area with strict exhaust sound limits. This system is street-legal in most states but is louder than stock.
• When to stop or choose another option: If your goal is absolute silence, or if you need to pass a visual-only smog inspection that requires a CARB EO number (the 15640 is not listed as CARB-compliant), this cat-back is not the right choice. Also, if your Accord has the 2.3L or 2.0L engine, this system will not fit—look for an engine-specific cat-back instead.

Product facts

• MagnaFlow 1998-2002 Honda Accord 3.0L Street Series Cat-Back Performance Exhaust System 15640: The MagnaFlow 15640 uses 2.25-inch mandrel-bent main piping and three straight-through mufflers with dual 4-inch polished welded-on angle-cut tips. Mandrel bending preserves full pipe diameter for better exhaust flow, and the straight-through muffler design reduces restriction while producing a deep, resonant tone—giving you a genuine performance gain you can hear and feel.