How much does it cost to turbo a 335i?

BMW 335i Turbocharger Assembly Replacement Cost Estimate. The average cost for a BMW 335i turbocharger assembly replacement is between $3,725 and $5,002. Labor costs are estimated between $1,194 and $1,506 while parts are priced between $2,532 and $3,497.

How much boost can a stock 335i handle?

OEM turbos can handle up to 18 psi with supporting mods, going over that is probably not going in increase any performance.

How much HP can stock N54 turbos handle?

N54 Engine Limits – Simple Answer. The N54 can handle around 600-650whp and 550-600wtq on the stock block and internals.

What is a Stage 1 turbo Upgrade?

Stage 1 Turbos have compressors that are designed with slim hubs and extended base tips. The result is less friction with air and more air flow capacity. Typical impellers of this type deliver around 15% extra air flow. Extra compressed air entering the aspiration system, means more power output from the engine.

How long do stock N54 turbos last?

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 fast do N54 turbos spin?

The turbos live a hard life. The turbine and the compressor can spin up to 200,000 rpm, and the exhaust inlet temperature can reach up to 1050° C.

How much boost can a N54 take?

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.

Are N54 internals forged?

Mahle Motorsports N54 pistons are forged for strength, light weight, and low drag to be a modest upgrade over the stock BMW pistons. Factory BMW pistons are cast aluminum, which is fine for the intended power output and durability.

How much boost does a 2007 BMW 335i have?

Regular boost is in the 8-9psi range like all N54s, but overboost on the 335is is 11.5-13.5psi range, depending on conditions, as mentioned.

How long does it take to install turbos on 335i?

Figure its at least 16-20hours of just removing the turbos and replacing, and yes, that is per BMW, and it COULD take longer if they move slowly and take their time.

How much is a single turbo N54?

A BMW N54 single turbo kit could cost $800 to upwards of $8,000, depending on what kind you choose. On average, single-turbo kits commonly cost between $1,000 and $3,000. As you’d probably expect, high-end turbo kits with more advanced technology will usually cost more.

How much does a Stage 2 cost BMW?

It is definitely around 10-11 hours, including tax, fluids and gaskets, expect to pay between 1300-1500 depending on the shop.

What is a Stage 3 turbo?

Stage 3 combines stage 1 and stage 2 mods and adds add-ons and changes to maximize power gains from various components. Some components that can be upgraded in stage 3 to increase power include the intercooler, head gasket, turbo/supercharger, inlet valves, spark plugs, and exhaust manifold gasket.

How much horsepower does a Stage 2 tune add?

Revo quote gains from 55HP up to 90HP depending on what settings are used with their software. The required hardware for their stage 2 software includes a full turbo-back exhaust with a sports-cat and a high-flow air intake.

What is required for a Stage 2 tune?

A stage 2 tune involves fitting a turbo-back exhaust on turbocharged vehicles or a cat-back exhaust system on non-turbocharged vehicles. In either case, these systems are designed to improve airflow from the engine. They are also well-known for improving the sound of a car.

Why do N54 turbos fail?

The vast majority of turbo failures are caused by oil starvation or oil contamination. The N54 turbos are supplied with engine oil and coolant to keep their high temperatures in check (Figure 1).

What makes a turbo whistle?

What causes turbo whistle? Turbo whistle is the sound of the compressor inside the turbocharger speeding up (also known as ‘spooling up’, which is why it kicks in at the boost threshold (when the turbo starts to kick in) as you accelerate up the rev range.

How do I know if my N54 turbo is bad?

  1. The car has noticeable power loss.
  2. The acceleration of the car seems slow and noisy.
  3. The car doesn’t easily maintain high speeds.
  4. There is smoke coming from the exhaust.
  5. There is an engine fault light on the dashboard.

What size turbos are on the N54?

Precision Turbos 6266 or 6466 are common N54 single turbos. The first two numbers represent the size of the compressor wheels, 62mm and 64mm respectively.

Does turbo work at idle?

Idling the engine cools the turbo because it circulates the oil, yet does not make the turbo “work.” The amount of cooling it needs is directly related to the way you just finished driving it. When you drive it gently around town, 15 seconds should be more than adequate.

How long does it take for N54 to cool down?

it takes it around 6-7 hours for it to completely cool down from operating temp.

How much HP can a stock 335i make?

The 335i with stock turbos is capable of making upwards and beyond 500 horsepower at the crank. However, the N54 vs N55 is an important subject here. BMW N54 engines with factory twin turbos are generally more capable. The N54 can make upwards of 500whp on stock turbos while the N55 maxes out around 425whp.

What engine is better N54 or N55?

The twin-scroll setup allows the engine to reach its top torque with 100 fewer rpm. According to Road Sumo, the twin-turbo N54 has better performance than the twin-scroll N55 as it can move more air when running. It is made of two turbochargers and a pneumatic actuator, unlike the N55, which has an electronic one.

How much HP does the N54 have?

BMW N54 Engine Specs A forged crank and rods deliver solid strength. Combine that with DOHC and variable valve timing and the N54 is good for 7,000 RPM redline. It also makes 300-335 horsepower from the factory.

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.

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