Thread: Intake backfire after 74mm throttle body install
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Old 08-14-2014, 03:14 PM   #4
818BoxsterS
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Join Date: Mar 2014
Location: SFV
Posts: 82
The new cai is 3" so same as stock and I double checked the rubber hoses connecting the t and they are solid. I just got a code P0507.
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