Two primary engines powered the 335i – the N54 and N55. Both engines are 3.0L inline-6 turbocharged engines. However, the older N54 engine utilizes twin turbos while the N55 is a twin-scroll single turbo. Despite the differences in turbos most BMW 335i models pump out the same 300 horsepower and 300 lb-ft of torque.
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When did the 335i get the N55?
Model year 2011 335i’s moved on from the twin turbo N54 engine to the single turbo N55. The N55 moved from piezo injectors to solenoid style injectors. This was a huge reliability upgrade over the problematic piezo injectors on the N54. However, the N55 uses the same fuel pump as the N54.
What engine is better N54 or N55?
N55 Reliability: Which Engine is More Reliable? This is always a touchy subject when it comes to discussions about the N54 and N55. Simply put, the N55 is more reliable. BMW’s N54 was the first mass production turbocharged gasoline engine produced by BMW in decades.
Is the N55 reliable?
N55 Reliability Despite the many misconceptions that BMW’s as a whole are unreliable, the BMW N55 is actually a fairly reliable engine. The four most common problems with the N55 are, in no specific order, the valve cover and gasket, water pump, oil filter housing gasket, and VANOS solenoids.
What cars got the N54?
- 2006-2010 BMW E90/E91/E92/E93 335i.
- 2007-2010 BMW E60/E61 535i.
- 2007-2010 BMW E82/E88 135i.
- 2007-2010 Alpina B3.
- 2008-2010 BMW E71 X6 xDrive35i.
- 2008-2012 BMW F01 740i.
- 2009-2016 BMW E89 Z4 sDrive35i.
- 2010-2013 BMW E92/E93 335is.
What BMWs have the N55?
- 2009-2017: 535i.
- 2010-2013: 335i.
- 2010-2013: 135i.
- 2010-2017: X3 xDrive35i.
- 2011-2013: X5 xDrive 35i.
- 2011-2015: 335i.
- 2011-2014: X6 xDrive 35i.
- 2012-2015: X1 xDrive35i.
What car has N54?
The N54 debuted at the 2006 Geneva Motor Show and was launched in the 335i model of the E90/E91/E92/E93 3 Series range. Following the introduction of its BMW N55 successor in 2009, the N54 began to be phased out. The final model powered by the N54 is the E89 Z4 roadster, which was produced until 2016.
Is B58 better than N55?
As you can see, from very early on the B58 has big gains over the N55 which it holds right through the rev range. As you can see, the B58 has a very similar boost curve, but makes around 4PSI more than the N55 across virtually the whole rev range.
What cars have the B58?
The B58 engine was named World’s 10 Best Engines in 2016 (installed in the 340i and 440i), 2016, 2018, and 2022 (M240i), X3 and X4 M40i, Z4 M40i, 2019 (X5) and 2019(M340i). The S58 engine, which was released in early 2019, is the high performance version of the B58.
Is BMW 335i twin-turbo?
From the Archive: We didn’t think turbocharging could improve the 3-series, but the new twin-turbo 335i coupe eclipses the previous-gen M3’s performance. From the November 2006 issue of Car and Driver.
How long do N55 turbos last?
N55 Turbo Longevity at 20+ PSI However, it is possible for N55 turbos to last 50,000+ miles at 23psi, for example. On the other hand, the stock turbo may decide to let go much sooner even at 20psi. It’s part of the risk you need to accept in pushing the N55 turbo towards its limits.
How much HP can N55 handle?
The N55 can handle around 550whp and 550wtq on the stock engine block and internals.
Is the N55 good for tuning?
Overall, BMW’s N55 is a tuner-friendly engine capable of making, on the stock turbo, plenty of power to satisfy a majority of enthusiasts, all while remaining reliable and driveable in all conditions.
Is N55 single or twin turbo?
Design. The main differences between the N55 and its N54 predecessor are the use of a single turbocharger, the addition of Valvetronic and the type of fuel injectors. Whilst the N54 used a twin-turbo arrangement, the newer N55 uses only a single twin scroll turbocharger.
How much HP can N54 handle?
The N54 can handle around 600-650whp and 550-600wtq on the stock block and internals.
How do I know if I have a N54 or N55?
starting from March -2010 all cars were N55 drivetrains. Probably the best way to tell without looking under the hood… is IF it has a DCT it is an N55. IF its an auto it is an N54. IF its a 6MT… you’ll have to look under the hood.
Does N55 burn oil?
n55 do burn oil, but for me it’s like nothing, since my audi burn 1L every 5000km or so. Which is ”normal” for a audi…. since there’s no dip stick, its hard to evaluate. I put ”around” 5L , and the sensor does not tell if its 100% full, or 110% or 90%.
Why is the N55 more reliable than N54?
The main difference is the exhaust. The new N55 engine has one exhaust pipe the feeds from all 6 cylinder (for less fuel consumption) while the N54 had 2 pipes, one feeding from cylinders 1, 2, and 3 and another pipe feeding from cylinders 4, 5, and 6.
How many turbos does a N55 have?
It has two separate turbos, each powered by 3 of the engines six cylinders. Both of the turbos on the N54 are of equal size and configuration. The BMW N55 TwinPower turbo is a single Turbo engine with two separate exhaust runners powering the hot side of the turbo.
What makes the N54 so special?
The biggest advantage of the BMW N54 is its power and potential. Sure, the twin-turbocharged petrol engine provides enough power as it is. Still, what truly makes it special is the ability to boost the output even more with a couple of aftermarket upgrades.
Is the N54 a good engine?
The N54 is a very highly regarded engine, for the most part. It’s received numerous International Engine of the Year awards and had thrice won the Ward’s 10 Best Engine Award. From an enthusiast standpoint, there are few engines today that can offer a similar return on the dollar in terms of modifications.
Is BMW N54 reliable?
The N54 is cheap and fast, but not reliable. 2JZ engines are fast and reliable, but they aren’t cheap to buy upfront. That said, the N54 earns its bad reliability reputation from all of the crappy parts around the engine. The N54 itself is a very strong engine that can often last beyond 200,000 miles.
Is N54 forged?
This is because from the factory the N54 came with forged internals. While which specific parts were forged and which were cast is up for debate, it’s widely accepted that the crankshaft and rods were forged while the pistons were cast.
What 5 Series has the N54?
As aforementioned, the N54 first came in the E9X. It was later available in the E60 5 Series, F01 7 Series, the X6 and the Z4, but its most popular application came with the 1M Coupe.
Who made the N54 turbos?
This turbo is made by Mitsubishi, the original equipment manufacturer (OEM) to BMW, and maker of the Genuine BMW N54 factory turbos.