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Old 03-10-2007, 03:21 PM   #2
Mulder
Trust no one
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Member#: 11170
Join Date: Oct 2001
Chapter/Region: Tri-State
Location: NYC
Vehicle:
02 WRX
15 WRX/05 GTO

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I don't know what kind of sensor the Evo uses, but the Subaru turbo engines use a semi-wideband sensor that cannot be tapped. Your TT will not get a useable signal from it and it will load down the circuit causing A/F problems. Therefore you do have to use the rear 02, which will not be as accurate but is your only option.
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