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      03-31-2012, 01:06 PM   #2
Asofi
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Drives: 2010 135i 6mt
Join Date: Mar 2009
Location: Chicago

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Nice write up!!! Thanks.

There's one step I was a bit confused on though you said...

"Now that the downpipes are tightend on the turbo's you can put the front O2 Sensor (gray sleeve) on the downpipe that is mounted to the rear turbo, make sure you tighten this one all the way. Now put in the front O2 sensor (black sleeve) on the downpipe that is connected to the front turbo and tighten it. "

Did you mean the rear O2 with the grey sleeve???