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Performance gain from bypassing 1st cat?

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Old 02-25-2010, 05:07 PM   #1
TRDBoonie [OP] TRDBoonie is offline
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Performance gain from bypassing 1st cat?

I'm getting ready to install my Thorley headers and was wondering if anyone has bypassed the first cat on there Tacoma's. If so how did it effect your performance and any problems with the check engine light coming on?
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