Cat Back Exhaust for Scion tC (2005-2010) 2.4L

High-Flow Cat-Back Exhaust for 2005-2010 Scion tC

What it Does: The Cat Back Exhaust replaces the restrictive factory exhaust system on the 2005-2010 Scion tC to minimize exhaust backpressure, optimize scavenging efficiency, and produce a deeper exhaust note.

The Stock Scion tC Exhaust Flow Restrictions

The factory exhaust assembly on the first-generation ANT10 chassis relies on narrow-diameter, press-bent aluminized steel tubing routed through chambered, heavily baffled mufflers. From an engineering standpoint, press-bent tubing features localized cross-sectional collapses that disrupt laminar exhaust velocity and produce excessive backpressure. Coupled with high-resistance internal baffles, this restriction impedes cylinder scavenging on the 2AZ-FE 2.4L engine, trapping thermal energy in the cylinder head and dulling throttle response. Furthermore, factory mild steel is prone to road-salt oxidation, flange corrosion, and premature joint failure over time.

The Engineering Solution

Fabricated from high-grade polished T-304 stainless steel, this performance cat-back system replaces restrictive factory routing with smooth, mandrel-bent piping to maintain uniform cross-sectional volume throughout every bend. Precision TIG welding and heavy-duty pre-welded hangers ensure exact alignment with factory mounting points for a bolt-on installation without chassis modification. By eliminating restrictive internal chambers in favor of a straight-through core design, this system significantly accelerates exhaust gas velocity, lowers backpressure behind the catalytic converter, and delivers a clean, resonant acoustic profile engineered specifically for the 2AZ-FE platform.

Technical Specifications

Compatibility

• 2005-2010 Scion tC Base Hatchback 2-Door 2.4L L4 (2AZ-FE)
• 2007-2008 Scion tC Spec Hatchback 2-Door 2.4L L4 (2AZ-FE)

Frequently Asked Questions

Does this fit the ANT10 tC?
Yes, this is a direct fit for the 2005-2010 Scion tC equipped with the 2.4L 2AZ-FE engine.

Will this cat-back exhaust system trigger a Check Engine Light (CEL)?
No, the system installs downstream of the factory catalytic converter and secondary oxygen sensor, preserving factory emissions compliance without triggering diagnostic trouble codes.

The Scion Performance Standard

Designed specifically for the Japanese sport compact platform, this exhaust optimizes thermal evacuation and acoustic resonance to unlock the full mechanical potential and aggressive sound of your high-revving coupe.