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.
Table of Contents
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.
How many pounds of boost can an N54 engine take?
How many PSI of boost can a FBO N54 handle on a daily driver basis? Boost is relative to the turbocharger used. 38psi is not intended for the stock twins. Generally speaking, depending on fuel and timing, stock twins are happy up to ~18-20psi.
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 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 can I get more power out of my N54?
Dual Cone Intakes – VRSF or BMS Dual cone intakes are an essential bolt-on upgrade for your N54 if you are looking to further tune and modify your car. DCI’s will allow your twin-turbos to take in more air, creating more pressure and combustion, resulting in more horsepower.
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.
How many miles can 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.
Why is the N54 engine 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.
Is the N54 or N55 better?
Thanks to the N54’s twin turbos and forged internals, it is the more capable engine mod-for-mod. However, the N55 has proven to be the more reliable engine. N54’s are notorious for their common problems, especially early on, but these issues are currently resolved.
How much HP does MHD add N54?
Expect your N54 MHD stage 1+ tune to put you in the ballpark of 320-370whp. As with any of the N54 stages, 91 octane will result in lower boost targets and horsepower.
Is the BMW 3.0 Twin Turbo a good engine?
Interestingly, the N54 received multiple awards over the years. It won five straight awards for the International Engine of the year and three straight awards for Ward’s 10 Best Engines. Unfortunately, there is no BMW M model of the N54, but a high-output model of the N54 was used in the 1 Series M Coupe.
Is the N54 twin turbo?
The BMW N54 is a twin-turbocharged straight-six petrol engine that was produced from 2006 to 2016. It is BMW’s first mass-produced turbocharged petrol engine and BMW’s first turbocharged petrol engine since the limited-production BMW M106 was discontinued in 1986.
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.
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).
How do I know if my N54 turbo is bad?
- The car has noticeable power loss.
- The acceleration of the car seems slow and noisy.
- The car doesn’t easily maintain high speeds.
- There is smoke coming from the exhaust.
- There is an engine fault light on the dashboard.
How long will BMW turbos last?
WEAR & TEAR. 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.
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 stock N55 turbo handle?
The N55 can handle around 550whp and 550wtq on the stock engine block and internals.
How much boost can stock N55?
N55 Max Boost Stock Turbo Summary BMW’s N55 engine is capable of excellent performance straight out of the factory. 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 do N55 Turbos last?
How long will a BMW N55 engine 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 power can stock N54 injectors handle?
The N54 on stock internals should be left around no more than 600whp/wtq. Anything beyond that to about 850whp should have at a minimum upgraded pistons and rods and better bearings.