the only 14 left in the usa! in stock today only at IIR!
The HKS WRX & STi Downpipe is designed as a simple, cheap solution for making power. The HKS WRX downpipe will eliminate both catalytic converters on your 2002-2007 Subaru WRX or 2004-2007 STi, and features 3in piping for optimal flow. While the HKS downpipe will improve performance, we do not reccomend it for anything other than a stock turbo, due to the flat-plate design that does creates wastegate turbulence.
Because the HKS downpipe eliminates both catalytic converters, it is not emissions legal and will trigger an emissions Check Engine Light (CEL) The HKS WRX & STi downpipe does help reduce boost spiking in 2.5L Subaru cars because of the reduced wastegate flow. This downpipe is full 3in with a flat rear flange, so we recommend an aftermarket 3in catback exhaust for proper fitment.
Part Number: 33006-BF001
No complaints. HKS always makes a good product.
Mates this to the forced performance blue turbo and tomei fatback. No fitments issues, is loud! The welds could be a bit better aesthetically speaking but for the price it gets the job done!
Doesn’t come with gasket or hardware between dp and turbo but does come with gasket to mate to a flat flange cat-back and the hardware for mating to cat back
Great fit and packaged well from hks easy to install
Fit well with the stock turbo.