how good are hks down pipe
the hks downpipe is ok. It's a flat flange, not a bellmouth, which blocks the wastegate. This might hamper your performance if you want a big power setup (eg you want to replace the turbo). For most applications, it should be fine.
You should definitely replace the downpipe gasket every time that you take off the downpipe. It isn't that expensive, and I have found that I always get leaks when I don't use fresh gaskets.
as far as I know the hks is a flat flange(unless they have recently changed it) in wich case the invidea, or just about any other dp is far superior. the hks is the same design as the stocker, minus a couple cats.
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Car Info: 2004 PSM WRX
the hks downpipe is only worth it if you buy it for under 100 . . . if you paid more for it you just got ripped off ! its an alright dp but you can get more power from a belmouth or divorced dp
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From: EBAIC- Wondering if I should have taken the blue pill...
Car Info: 03 WRX wagon type RA
hks bellmouth
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