GReddy Performance Products is a leader in high-performance turbocharging, and this 2006 Civic Si is no exception. Featuring a prototype T517Z bolt-on turbo kit, it uses a stainless steel exhaust manifold and GReddy's e-Manage engine management system. A prototype Type 31V front mounted intercooler kit keeps the charge temperatures down, and an EVO2 cat-back exhaust system reduces backpressure. The system also includes GReddy's Profec B-Spec 2 boost controller, Type RS blow-off valve, iridium Tune spark plugs and a full auto turbo timer. The suspension is lowered with a Tein EDFC SS coilover system, and the exterior is enhanced with a Honda Factory Performance aero kit, Volk Racing GT-V wheels and Toyo RA-1 tires.
| Powertrain Modifications | GReddy prototype T517Z turbo kit |
| . | GReddy e-Manage engine management system |
| . | GReddy prototype Type 31V front-mount intercooler |
| . | GReddy Type RS blow off valve |
| . | GReddy EVO2 cat-back exhaust system |
| . | GReddy Iridium tune spark plugs |
| . | GReddy Profec B-Spec 2 boost controller |
| . | GReddy Full Auto turbo timer |
| . | GReddy silver 60 mm turbo and fuel pressure gauges |
| . | GReddy oil and radiator caps |
| . | GReddy oil block adapter |
| Chassis/Suspension Modifications | Tein SS coilover suspension |
| . | Tein Electronic Damping Force Controller in-cockpit strut adjustment |
| . | 18x8.5 Volk Racing GT-V wheels |
| . | 225/40R-18 Toyo RA-1 tires |
| Exterior Modifications | Honda Factory Performance body styling kit |
| . | Vinyl Mayhem graphics |
| . | Mother's car care products |
| Interior Modifications | GReddy counter-weighted 6-speed shift knob |