How much HP does a Stage 2 BMW N55 have?

Expected horsepower for the N55 MHD stage 2 tune comes in around 310-340whp.

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.

How much HP can you get out of a N55?

The N55 can handle around 550whp and 550wtq on the stock engine block and internals.

Is N55 a tunable?

This high performance N55 engine is highly tunable and fast.

How can I make my N55 faster?

  1. ECU Tuning. The engine control unit (ECU) is the brain of every modern engine.
  2. Cat-Back Exhaust.
  3. Downpipe.
  4. Intake.
  5. Intercooler.
  6. Charge Pipes.
  7. Oil Cooler.
  8. Oil Cooler Thermostat.

How much boost can N55 handle?

With a reliable twin-scroll turbo, the N55 is capable of making up to roughly 25-26psi. However, for reliability and longevity reasons, we recommend limiting boost to about 20-21psi.

How long 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.

How much HP does a tune add to a 335i?

Expect gains of approximately 50HP when upgrading the downpipes and flicking the switch to Stage 2 tuning. The difference in power gains from a catless downpipe compared to a high flow catted downpipe are only a few horsepower.

How much HP is a tuned 335i?

Instead, we’ll give a quick breakdown of BMW 335i horsepower potential: Tune-only: 350-400 horsepower. Tune + bolt-ons: 400-500+ horsepower. Turbo upgrades: 450-700+ horsepower.

Whats faster N55 or N54?

The N55 twin-scroll turbo offers slightly faster turbo spool and delivers peak torque 100 RPM’s sooner than the N54; a characteristic that is not noticeable as each turbo set up spools quickly and delivers impressive torque through-out the low end and midrange.

Does the N55 have forged internals?

The N55 engines don’t have forged components like the N54 except for the crank.

What sounds better N55 or B58?

The B58 is a ‘better’ newer engine and has won awards. It runs a higher compression ratio so is more efficient and it has a bigger low end/mid range punch. N55 standard likes to rev more and sounds better, partly as it has a less complicated exhaust.

How much boost can N54 handle?

Likewise, newer OEM turbos may decide to give out before 20psi. However, if you are concerned about N54 turbo longevity, somewhere in the ballpark of 17-18psi on stock inlets/outlets and 19-20psi on upgraded should be safe for most.

How do I know if I have PWG or EWG?

You can see the physical differences between the EWG and PWG wastegates. Additionally, towards the top left of the PWG photo you will see a blue connector. EWG N55’s do NOT have the additional blue connector.

How much HP does MHD add N54?

Expect your N54 MHD stage 1+ tune to put you in the ballpark of 320-370whp.

Which is better N54 or N55?

N54 vs N55: key differences The main difference between N54 and N55 is the type of turbocharger used in each engine. Its N54 engine uses twin turbos, while the N55 uses a single turbo with a twin-scroll exhaust. A twin-scroll turbocharger is a standard turbocharger but splits its exhaust housing into two.

Who made the N55 engine?

The N55 was BMW’s first straight-six engine to use a twin-scroll turbocharger.

When did 135i get N55?

THE 2011 BMW 135i is set to switch from its existing N54 twin-turbo setup to the German carmaker’s new N55 single-turbo inline-six, along with the 5 Series GT and the next generation 335i.

What size is N55 turbo?

The N55 engine had a journal bearing Borg Warner ‘B03’ turbocharger which had a custom version of the smallest Borg Warner EFR billet compressor wheel (62 mm) and custom inducer sizing. For the N55 engine, maximum boost pressure is understood to be around 0.61 bar (8.8 psi).

How much power can a stock N55 turbo make?

HOW MUCH POWER CAN THE STOCK N55 MAKE? From the factory, according to BMW, the N55 Inline-6, twin scroll single turbo motor produces 306 HP/ and 295Ft-Lbs. Like most BMW’s, we expect these numbers to be underrated, and we set out to find just how much power it will make.

Can you put N54 turbos on a N55?

The N54 Twins have studs on the bottom side of the flange that can not be utilized with the N55 Single. What this means is that in order to place the N55 Turbo on the N54 you must remove 5 of the N54 Studs, and redrill the head and add 4 studs in the correct location to properly secure the N55 Turbo.

Is the N55 a reliable engine?

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 coils last N55?

We recommend the following N55 ignition coil intervals: Stock – 60,000-70,000 miles. Modded – 30,000-40,000 miles.

How often should you Walnut blast N55?

Carbon buildup on the BMW N54 engine (as well as N55 engine) can become severe over time, almost completely closing off the intake tracts and valves. BMW recommends intake valve cleaning in the form of walnut blasting roughly every 30,000 to 50,000 miles.

How much does it cost to tune a 335i?

The average cost for BMW 335i Engine Tune-Up is $331.

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