OP, N54 engine was used up to 2010 which used Mitsubishi twin turbos. 2011 and on 335i uses N55 engine with BorgWarner single turbo TWIN SCROLL setup, Hence, Twin power technology. the only 3 series that still uses n54 after 2011 is the 335is.
Is 2010 335i N54 or N55?
The N54 began production in 2006 and first appeared in the 2007 BMW 335i; in 2008, the N54 was introduced along with the 135i and 535i. BMW’s N55 engine began production in 2009 and started replacing the N54 in 2010.
What engine is better N54 or N55?
And, as already stated, the N54’s tune potential is better than the N55’s. I have driven 135is with both the N54 and N55 and own the N54 equiped version. My takeaway is that the N54 is indeed the better performing. My 135i has the GIAC tune with a ‘stock’ setting so when I compare it’s ‘stock’ to stock.
Is the N55 engine 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.
How long do N55 turbos last?
N55 Turbo Longevity at 20+ PSI In general, more boost will reduce the lifespan of the N55 stock turbo. 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.
What year 335i has 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.
How long will a N54 last?
The N54 can and often does last 200,000+ miles if you’re willing to spend enough money. If the repairs are done right the N54 can offer good reliability and longevity. You’ll just end up spending more money on repairs and maintenance than these 10-15+ year old cars and engines are worth.
How much HP can N55 handle?
The N55 can handle around 550whp and 550wtq on the stock engine block and internals.
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 my 335i is an N54 or a N55?
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.
Which year 335i is most reliable?
How can you tell N54 from N55?
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.
Does N55 burning 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.
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.
Why do N54 turbos fail?
The N54 Wastegates fail from simple wear and tear of the engine. Over time the actuator and rods of the turbocharger wear down, resulting in rattle and boost control issues. In this case, running higher levels of boost (psi) on your turbochargers will likely increase your chances of Wastegate failure.
How many miles can N55 last?
The BMW N55 motor should have no problem lasting over 150,000 miles, and some owners report getting over 250,000 miles out of their engines.
Do all 335i have twin-turbo?
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.
What years did the 335i have N54?
The BMW N54 is a twin-turbocharged straight-six petrol engine that was produced from 2006 to 2016.
Why is the N54 so good?
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.
How long do turbos last on 335i?
Turbochargers on the BMW N54, for the most part, last around 100,000 miles before they have to be rebuilt or replaced. It isn’t uncommon to hear of cars that have the original turbos still functioning as designed upward of 200,000 miles.
How long do stock N54 turbos last?
Turbos are designed to last the lifetime of the vehicle (or around 150,000 miles); however, it’s possible for them to wear out over time depending on how hard you drive the car and the original build quality of the turbo.
How often do BMW 335i break down?
Some are known to fail around the 30k–40k mark and the repair history would reflect that. But most will easily last about 70,000 miles, and they come with a 10 year/120,000-mile warranty as well. Now you know why the warranty is so important.
How can I make my N55 faster?
- ECU Tuning. The engine control unit (ECU) is the brain of every modern engine.
- Cat-Back Exhaust.
- Charge Pipes.
- Oil Cooler.
- Oil Cooler Thermostat.