fwd4life
Probationary Member
- 5
- 0
- Feb 21, 2010
-
battleground,
Washington
Will someone ### tell me what it is my car is totally stock 
and the o2 sensor is still good
and the o2 sensor is still good
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i blewmy t25 and put a new one on and now my car runs lean
- Thread starterfwd4life
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EagleTSIawd
15+ Year Contributor
- 407
- 10
- Mar 17, 2005
-
Stayton,
Oregon
we need some more info here, when does it go lean? how much lean? and what are you using to check the air/fuel readings?
Derock2gspyder
10+ Year Contributor
- 50
- 0
- Jun 24, 2008
-
spanaway,
Washington
ya and if its completely stock how are you determining its running lean! need some more info to have a better idea of whats going on!
knochgoon24
DSM Wiseman
- 6,135
- 97
- Jan 29, 2008
-
Troy,
Michigan
Do a boost leak test. You're sucking extra air into the system after the MAS somewhere.
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