GrimmSpeed 3-Bolt External Wastegate Ceramic Coated Up-Pipe With Dump Tube 38mm

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An External Wastegate (EWG) allows exhaust gases to be diverted prior to entering the turbo. This facilitates lower back pressure at the turbine, allowing for increased boost control, faster spool-up and greater top-end power. The GrimmSpeed EWG Up Pipe has a larger internal diameter than your stock unit, allowing a higher volume of exhaust gas to reach your turbo more efficiently. This helps maintain boost levels further into your RPM range. Depending on your specific setup, these improvements can net a 10-40 HP increase. An internal wastegate can create a larger amount of turbulence in exhaust flow through your turbine housing; moving to an external wastegate eliminates much of that turbulence and isolates the turbo from what little turbulence still exists as your wastegate opens and closes.

- 3-Bolt Inlet Flange fits most 3-bolt headers!
- 321 Stainless Steel Interlocking Flex Section - Reduces fatigue and facilitates thermal expansion
- Contoured EWG Side Outlet - CNC bent and laser cut, this EWG exit allows exhaust gas to exit with maximum efficiency
- 2.0mm Tube Thickness - 33% Thicker than the competition
- 1/2" Stainless Steel CNC Flanges - Fully machined, these beefy flanges offer perfect fit and transition every time
- 10+ WHP Gain - Ask your tuner what you can expect based on your particular setup and goals!
- 1.85" Inner diameter - Supports 600whp+
- FARO Arm Designed - Allows more precise design and a stronger, better fitting product

- Confirmed fitment with Tomei, GT-Spec and eBay replica 3-bolt headers
- Works with 40mm Turbosmart and 38mm Tial wastegates (sold separately)

2002-2007 WRX
2004-2007 STI
2008-2014 WRX
2008-2014 STI
2015-2020 STI

More Information
Color Black
Manufacturer Grimmspeed
Stock Status In Stock
Price $390.00
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