Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

ARC Induction box good?

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Old 12-14-2007, 03:18 AM
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Red face ARC Induction box good?

Anybody know if the ARC Induction Box would be good for a stock EJ25, basically with just a catback and dp? Thanks.
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Old 12-14-2007, 03:05 PM
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we have seen total 13+whp gain on an EVO.. so I'd assume it should have the same results on the WRX/STi as well
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Old 12-21-2007, 05:38 PM
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Bad idea.. it throws off the MAF
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Old 12-31-2007, 02:30 PM
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hot air intake for Subie as well.
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Old 01-01-2008, 09:00 AM
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The latest Sport Compact Car has underhood shots of Travis Pastrana's STI Rally car, which he's taken to the podium dozens of times.

300+ whp, 430+ tq...

...and the stock airbox.
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Old 01-01-2008, 11:56 AM
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Originally Posted by meilers
The latest Sport Compact Car has underhood shots of Travis Pastrana's STI Rally car, which he's taken to the podium dozens of times.

300+ whp, 430+ tq...

...and the stock airbox.
but apparently it works on evo's and aren't they exactly the same as wrx/sti's?

Keep the stock airbox.....end of story
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Old 01-03-2008, 05:49 PM
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It's good only if you need it in terms of power.
If you do, then in terms of aftermarket airboxes, it's pretty damn good. Just make sure you have some form of engine management.
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