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Fuel system difference - 135i vs 1M
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| 04-28-2011, 03:25 AM | #1 |
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Fuel system difference - 135i vs 1M
Good find from rem3 on the other site.
135i  1M  Could it be that the 1M has two inbound lines for more fuel on the N54... Last edited by AltecBX; 04-28-2011 at 03:31 AM.. |
| 04-28-2011, 03:53 AM | #2 |
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Very interesting
 What is that part # 2 on the 1M where the line gets double?
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| 04-28-2011, 03:56 AM | #3 | |
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| 04-28-2011, 11:11 AM | #5 |
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Yup definitely a filter
 Oddly enough, this second line only shows up when the Euro region is selected. The US region 1M N54T has the same line as that of the 135i.
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| 04-28-2011, 01:11 PM | #7 |
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So the 1M fuel system has a fuel return...Does this mean the filter they added in acts as a fuel pressure regulator? That would be the only way it could return fuel from the filter that makes any sense.
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FFTEC 62mm...yeah I think that about does it.
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| 04-28-2011, 08:13 PM | #8 | |
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