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Join Date: Jun 2008
Location: isle of wight, englandshire
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|3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.|
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There are two and they are both located on the exhaust header pipe. Refer to this diagram for exact location.
no they dont just the two like the diagram above, not sure if the E46's have more but the E36 328i only has two
well i can confirm that euro spec 328i's have 2 o2 sensors and us models 4. my dealership wanted £155.00 each (which is about $442.90 for both) but on ebay they were £50 each. so if anyone over there needs one (not sure how much they are on us ebay) have a look. it may be cheaper to buy one from here and ship it over.
actually, while i'm here question. on my tailpipe exit one side has a vertically pivoting butterfly valve. what's it for.? damn emissions regulations. didn't have this problem on my '79 trans am over here.heh heh
The valve is controlled by vacuum.. from memory it loses pressure about 2500rpm and starts opening. This creates less back pressure and more noise!!! So sounds sweet and creates more power.
Having a 320i.. i just opted for a triflow muffler.. sound all the time and another 20hp
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