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 Dec 14, 2007 | 03:18 AM
  #1  
GripItUp's Avatar
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Car Info: 2007 WRX Tr
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.
Old Dec 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
Old Dec 21, 2007 | 05:38 PM
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Bad idea.. it throws off the MAF
Old Dec 31, 2007 | 02:30 PM
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hot air intake for Subie as well.
Old Jan 1, 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.
Old Jan 1, 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
Old Jan 3, 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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