LexFather

The N54 features a twin-turbocharging system, as well as direct-fuel injection and BMW’s own Valvetronic technology, and in its most potent configuration develops up to 326hp (243kW) at 5,800rpm and 332lb-ft (450Nm) of torque from as low as 1,500rpm. BMW’s new variation on the engine, labeled the N55, is based on the same basic engine block and valve system but only sports a single turbocharger. It is the world’s first engine to combine turbocharging, direct fuel injection and fully variable Valvetronic valve management developed by BMW.
http://www.motorauthority.com/bmw-un...series-gt.html
Peak output is still a healthy 306hp (225kW) at 5,800rpm and 295lb-ft (400Nm) of torque from an even lower 1,200rpm. Furthermore, the new N55 is also said to be more fuel-efficient than the N54 though no independent test results have been produced.

bad co

umm, 2.0tfsi. its one turbo its a inline engine its direct injected and has a valve control system

nabbun

^^^^^^^^^^^yes but the 2.0 is only a 2.0 making 200 hp.

this is a 3.0 making 300 hp and it comes in a better handling car

bad co

210 now from the factory and 260 with a chip

nabbun

we're talking stock for stock son

i'm pretty sure the N54 and N55 would make more that just 50 HP with a chip too lol

DASHOCKER

iTrader: (2)

This is a gem of a motor. Performance, mpg's ( to the green at heart) all with mod potential.. I love the N54 though.. I will have to drive a car with an N55 to compare.

plex

iTrader: (11)

Nice.......

MR_F1

The point is, the N55 is not a world's first, just like the N54 wasn't.

Nice engine though. The potential makes me tingle and warms my special place

Threxx

Technically the article is correct. It says this is the first engine in the world to use turbocharging, direct injection, and fully variable Valvetronic valve management developed by BMW.

If I remember correctly the N54 in my car is only fully variable on the exhaust side, whereas the second generation valvetronic adds full variability on the intake side as well (whereas on the N54 it's variable but only 2 or 3 stage)

But that's just off the top of my head. I could be remembering that backward.

SLegacy99

I say go with it. However, I am curious about turbo lag. Nevertheless, if this can produce quite a bit of power, more efficiently, and at a lower cost it should become the the new engine of the _35's. More reason to but an M or a V8 if you really want that much power.

<VENOM>

In all seriousness, WTH happens to these cars when they hit 100k, does the cost of maintenance and upkeep get so high it's generally smarter to just get something newer, the roads are littered with old Honda's, Toyota's and Nissan's, that are not even worth what someone pays monthly on one of these BMW's

It's discouraging to think how much these cars cost new, and that most are leasing them, and they have such a short life

Threxx

The fact that they achieve near peak torque at 1500 rpm tells you that lag is likely a non issue unless they can't achieve that number consistently.

The reason that was given for the twin turbos originally was the elimination of turbo lag... and the 335i has none that I can discern.

Then again with certain turbo designs, a single turbo can be just as lag-free as a more traditional twin turbo setup. My 2.0t A4 had a tad bit more lag than my 335i does, but still barely any and nothing like people are typically talking about when they complain of cars with turbo lag. The turbo cars from 10-15 years ago all had the extreme characteristic of hitting the pedal and then waiting for a second or so to get your head snapped back. It was a cool feeling but not all that practical from a throttle response or acceleration # standpoint.

MR_F1

point taken, but you know it's a technicality

92 SC400

^^^ Maybe they mean first developed by BMW...?

Anyway, I kind of like the way this sounds. Any mention of when this may make it under the hoods of future BMWs?

DASHOCKER

iTrader: (2)

There is a guy on e90post with 80k on his 07 335. His car has been flawless. Guess what? There are BMW's on the road with over 100k, 200k with no major problems. There are some Japanese cars, hell even some on this site that are experiencing a plethora of problems at the 100k mark and less. Lexus maintainence is not exactly cheap.. Starter, AC condensor, cats, electrical gremlins (vsc/trac lights popping up), and the list goes on.... All are over $1k in repairs.. I never succumbed to German car phobia & will continue to roll in them.