We recently had a G37 at the facility, and we were able to do some testing on the G37 Headers, Cat-Back Exhaust, and High-Flow Catalytic Converters on the same vehicle to compare versus stock.
PDF Dyno Sheets are available below:
STILLEN G37 Cat-Back Stainless Steel Exhaust
Part #504400 – Dual Wall Straight Cut Tips
Part #504401 – Single Wall Slash Cut Tips
18 WHP Gain
STILLEN G37 High-Flow Catalytic Converters
Part #503436 – Metallic Converters (Pair)
14 WHP Gain
STILLEN G37 Stainless Steel Headers
Part #508387C – Ceramic Stainless 409
Part #508387S – Stainless 304
Part #508387N – Stainless 409
14 WHP Gain
These parts are all in stock and available for immediate shipping. Pictures of these items are also below.
All items have been discontinued at this time, blog article remains for educational purposes.