Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

hks downpipe

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Old Dec 11, 2003 | 07:07 PM
  #2  
Daredevil's Avatar
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the hks does hardly anything for performance
small diameter and no belmouth
save adn get the expensive dp (helix, cusco) its well worth it
its much easier understandable when you see an HKS/stock down pipe held up next to a helix belmouth with a huge diameter.
Old Dec 11, 2003 | 09:09 PM
  #3  
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how much bigger is the piping on the hks dp than the stock one?
Old Dec 11, 2003 | 09:12 PM
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i think an inch
but the point is the belmouth, which the hks does not have



compared to




the middel ppicture in the HKS collage(sp?) ist he same opening as the bottom pic of the helix
(both openings are from the turbo)
huge difference
Old Dec 11, 2003 | 11:42 PM
  #6  
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the HKS plate mounts the same way at the stock downpipe

go with a bellmouth design
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