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True or False??? True or False???
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Old 09-30-2007, 06:24 AM   #1
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True, it is mainly because of the disconnected 2nd 02 sensor.
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Old 09-30-2007, 09:27 AM   #2
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On the Boxster, the secondary O2 sensors are after the pre-cats i the headers, not the secondary cats. The car cannot tell if the secondary cats have been removed.

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Old 09-30-2007, 12:55 PM   #3
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Your 18 years of experience (or is it 18 years old) Porsche Master Mechanic is wrong. The O2 sensors are on the header cats (1st set) like bmwm750 stated. No way for a CEL to come on.
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Old 09-30-2007, 05:41 PM   #4
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This is absolutely false. I took the secondary cats off over a year ago and have driven thousands of miles on and off the track. No CEL. This really isn't something to do to gain HP as you will never notice the difference but it will alter the tonal quality of the exhaust which can be just as rewarding as a few HP.
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Old 09-30-2007, 05:44 PM   #5
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Porsche Master Tech... don't always trust those words...
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Old 10-01-2007, 03:23 AM   #6
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Quote:
Originally Posted by easyc
Porsche Master Tech... don't always trust those words...

hahaha... how tru, how tru....
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Old 10-01-2007, 05:47 AM   #7
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