GrimmSpeed J-Pipe 3" Catted - 2015+ WRX 6MT
With the 2015 J-Pipe, the devil is truly in the details and the product development team here at GrimmSpeed has taken the time necessary to knock each of those details out of the park. As a result, what you see here is a meticulously engineered J-Pipe with an innovative flange design, single piece construction, excellent ground clearance and fitment with superb quality and craftsmanship.
Innovative Turbo Flange Design - 1/2" thick while retaining all OEM brackets
One-Piece Tube - Ensures exact fitment, robust construction and ease of installation
Smooth 3.5" to 3" Transition - Matches turbine outlet size and then reduces quickly to maintain exhaust velocity
100% Made in the USA - Manufactured right here in Minnesota
Optimized Tube Routing - Maximize ground clearance and minimize flow restriction without modifying suspension hardware, etc
Custom Stainless Turbo Studs - Replace the terrible OEM studs and nuts with these, machined specifically for use with 2015 WRX turbine outlet and our 1/2" flanges
Standard 3rd O2 Bung - Allows the future use of aftermarket sensors
Grounding Strap Mount - Retains all factory functionality
300 Cell Metallic Substrate Catalytic Convertor (Catted Models Only) - Excellent balance of the reduced restriction of a `race cat` without the stink of a 200 cell unit
Performance and Tuning
Performance of the J-Pipe was verified on our 2015 WRX using the following method. Our tuned baseline run is the same run that we used in showing the boost control performance of the GrimmSpeed 3-Port Solenoid. We then installed the J-Pipe and retuned the car, using the exact same tuning methodology to ensure consistency. This ensured a real apples-to-apples comparison between the stock J-Pipe and the GrimmSpeed unit. The results showed a gain of 26.7whp (14.1%) and 19.8wtq (9.0%) and are displayed in the chart to the left. The percentage gains should be the focus here, as this particular dyno reads very low (stock baseline was 171). From a completely stock vehicle, users can expect a gain of around 45whp (27%) and 70wtq (41%) with the installation of the GrimmSpeed J-Pipe and custom tuning.
Manufacturer Part Number: 007103
WH Part Number: grm007103
*** Product Availability Information (Handling time) ***
Laval Location: Typically ready to ship within 24 to 48 hours
Canadian Warehouse: Typically ready to ship within 2 to 4 business days
Manufacturer Stock: We have transfers coming from the US warehouse every 3 to 4 weeks.
US Shipping Warehouse: This warehouse is only for shipping to our US customers.
Out of Stock or Special Order: This means we either do not have live inventory for this manufacturer, or this item is a special order from the manufacturer, or this can also mean that the product is on backorder at the manufacturer. If you would like a more precise ETA, please contact our sale team prior to placing your order.