Sep 16, 2015 · BMW used the three-stage intake manifold on the N51 to compensate for the slightly lower compression ratio as compared to the N52, 10.0:1 compared to 10.7:1. They are …

May 4, 2011 · Visually the N51 and N52 are identical. The easiest way to identify which engine you’re dealing with is to take a look at the vehicle emissions plate under the hood. You’ll notice …

Jun 28, 2022 · are made become the property of BMW NA. A repair performed as the result of a Smog Check test failure due to a defect in a part, which is warranted for 15 years/150,000, is …

Jun 17, 2019 · 3. How much of the time based warranty remained I.e. a 2011 N51 will be warrantied till 2026 - that's a pretty good deal on all that is actually covered. 4. Was I buying it …

2011 Alpine White BMW M3 Coupe 6-speed Manual w/ ZCP. 2008 Alpine White 328i Coupe 6-speed Manual/ BMW Performance Exhaust/ M6 Wheels. (Retired) Future owner of a Jetson's …

Jan 3, 2013 · A forum community dedicated to BMW owners and enthusiasts. Come join the discussion about Bimmerfest events, production numbers, programming, performance, …

Feb 3, 2019 · A forum community dedicated to BMW owners and enthusiasts. Come join the discussion about Bimmerfest events, production numbers, programming, performance, …

Jan 12, 2020 · Thats one of the DISA valves. If you have it, it's an N52. If it's the single stage manifold (ie no valve), its an N51." According to the Component/System comparison chart of …

May 26, 2022 · Searching on "N51 rough idle", people have found fixes that range from MAF sensor, to vanos units rebuilds, to DME software updates, to coil replacements, etc. I think the …

Jul 3, 2017 · BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > N51 …