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Old 08-09-2017, 05:41 AM   #1
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truegearhead's Avatar
Join Date: Jul 2011
Location: Richmond, VA (The Fan)
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Bogging, can it be caused by O2 Sensors?

I've got a bit of a nightmare, I'm a week a way from taking my car to the track and I have a bogging problem. Its a just a track car and has test pipes, I just replaced the airfilter and re hooked up the rear O2 sensors (I don't have cats so they weren't doing much). The car is throwing O2 codes (as it always does with test pipes). My question is, can full throttle bogging be caused by O2 sensors or is something else at play. I'm thinking the new filter may have had oil on it and ruined the MAF (its been 43-4 years since I've replaced it). What do you guys think?

1997 2.5 Boxster NASA Time Trial track car
2003 911 C2
NASA HPDE Instructor
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Old 08-09-2017, 06:59 AM   #2
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Location: FL
Posts: 3,900
I always had thought that the most common cause of bogging was MAF, quick test is to disconnect wiring plug from the MAF and do a quick drive and see if it is resolved.

Hope you get it solved for your track day!
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