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Old 06-10-2008, 11:11 PM   #160
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Join Date: Sep 2004
Fan#: 12724
Location: Fairmont, WV
What I Drive: 06 Sonic Blue ZX5 SES turbo

Posts: 1,263
FF Reputation: 61 sporadic Excellent Standing Member
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I do not have to pass emissions here, so the efficiency of my high flow cat isn't really measured.
My car does not use o2 sensors. It's tuned in open loop.
As for how that's done exactly I don't know. I'm no tuner.
The only o2 sensor in my entire exhaust is my wideband.
2006 sonic blue zx5 GT2871r turbo.
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