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.

2.0 vs 2.5 Breather Question

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Old Oct 6, 2009 | 05:38 PM
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From: East Coast!
Car Info: 2004 STi
2.0 vs 2.5 Breather Question

How come the 2 liter only has one valve cover breather port on each cover while the 2.5 has two on each?

And the 2.0 only has one crank case drain vent while the sti has two?

Any reason why the STi needs two????
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