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E46 M3 (2001-2006) Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006.


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Old Mon, Aug-26-2013, 06:42:23 PM   #11
AngiM3
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Default Re: EML Light and P0121, P0171, and P0174

So after taking out the manifold ... checked all the places that the air leak could be...I completely gave up. I took it to a shop suggested to me by O'reilly and they immediately found out the air filter that I got from a sport auto shop was NOT the correct ones. It was not meant for my car and totally KILLED my air flow box (MELTED).

I was lucky the shop owner Parker at Broad Strokes had a extra part that melted and sold it to me or I would have had to purchase the whole system.

NOTE TO SELF:
Never going to go to the auto sport parts in Seattle again!

I have to say this P0171 / P0174 / EML light has cause me so much grief. I have taken it to so many shops, and worked on it myself. I even had another shop in Kirkland do a smoke test. Told me there is a leak and had to fix it... and apparently it was not.

So after I drove for the whole weekend... I went on Monday to emission and passed! YAH! Renewed my TABS!

Thanks everyone for your help. Best forum EVER~
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Discussing EML Light and P0121, P0171, and P0174 in the E46 M3 (2001-2006) Forum - Engine: S54 - Max Hp: 333 hp at 7,900 rpm / 262 lb/ft at 4,900 rpm
Total Produced: 45,000+ - Years Produced: 2001 to 2006. at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)