HPT Motorsports - Invidia Catless Divorced Waste Gate Downpipe 2005-07 Legacy GT

Invidia Catless Divorced Waste Gate Downpipe 2005-07 Legacy GT

The Invidia catless, divorced wastegate downpipe for the 2005-07 Legacy GT is designed to replace the restrictive, OEM two piece, two cat, downpipe. Invidia made the 05-07 Legacy GT downpipe from mandrel bent 3" stainless steel and welded on a thick flange and a cast stainless steel housnig to provide maximum airflow and improved performance. A divorced wastegate downpipe has a plate the protrudes into the turbo to separate exhaust flow coming out of the turbo to give reduce turbulence. This is good for stock and smaller turbochargers.

NOTE: Invidia's catless downpipe will cause a Check Engine Light (CEL) on your Legacy GT. While this isn't harmful, it can be annoying and disables the cruise control -- you can use a software solution such as the Cobb AccessPORT to eliminate these codes or try a mechanical fix (O2 sensor spacer). Boost spiking may also be a factor, which can be controlled with devices like the Cobb AccessPORT.

WARNING: On the 05-07 LGT there are boost spike or creep issues in all cases with the use of an aftermarket downpipe or turboback that uses a bellmouth or external dump tube design. This is because the 2.5L engine pushes so much air. Even with the internal wastegate fully open, not enough air can exit to stop spinning the turbo, the result is boost creep or boost spike. You can fix the problem by porting the stock turbo's wastegate passage (any exhaust shop should be able to do this or it can be done at home) or you can get an engine management system to fix the issue, like a UTEC or AccessPORT.

FITMENT: 05-07 Legacy GT
NOTE: Automatic & manual transmissions require different part numbers please choose accordingly below.

Recommended Parts: OEM Subaru Gaskets

OEM Gasket Kit for Uppipe Install 2002-2006 WRX and STi