I don't know...The new Infiniti FX engine (expected soon to be on the M50) engine is already doing 390Hp without turbo, and with 5.0 liter displacement. Bigger 5.5L, Turbo, and only 10Hp more than the next Infiniti M?

I don't know, I'm not impressed. Guess the Infiniti is going to get some rave reviews (again).

"I don't know...The new Infiniti FX engine (expected soon to be on the M50) engine is already doing 390Hp without turbo, and with 5.0 liter displacement. Bigger 5.5L, Turbo, and only 10Hp more than the next Infiniti M?

I don't know, I'm not impressed. Guess the Infiniti is going to get some rave reviews (again)."

Article says 4.4L:

The 555i is going to be powered by a 4.4L twin-turbocharged V8 that puts out 400 horsepower and 450 lb-ft of torque.

So the 555 will be 4.4 (are they taking cues off AMD?) My fault then.

So 4.4L Turbo, that's better, I guess.

BMW is using turbochargers for torque and gas mileage, not HP bragging rights. That's why they're sequential instead of simultaneous. Bmw clearly makes awesome high hp NA engines. (M3.. M5) They even stated they were using turbochargers for gas mileage. The 335i gets remarkably good gas mileage for such a ridiculously fast car (20/29) with awesome torque w/300 at 1400 rpm. I'm sure this engine will do much the same. I'd expect 17 city and 25 hwy.

HP/L doesn't matter (especially with turbochargers), a viper is much much faster and handles better than an s2000 and they get essentially the same gas mileage (20 vs 21).

It's nice they're putting this engine in a decent car and not the garbage X6. Hopefully it'll come with a real transmission.
The current 5 is UGLY. Hopefully the next generation that comes with this engine will actually be a car I'd want to be seen in enjoying the great driving.

There is no replacement for displacement..True, a turbo can boost engine power when needed and help increase fuel economy when extra power is not needed, however, if you floor a turbo, it will yield even worst fuel economy than a normal inducted engine. And if the oil is not changed at the right intervals, say good bye to your little turbo friend, and say hello to the mechanic!

"And if the oil is not changed at the right intervals, say good bye to your little turbo friend, and say hello to the mechanic!"

"it will yield even worst fuel economy than a normal inducted engine"

Says the redneck who thinks you need a "big-block American V-8" to have a fast car.

Every car needs its oil changed at regular intervals. And every turbocharged vehicle now days comes with an oil cooler just for prolonging the life of the turbo.

Less fuel economy than a larger displacement/similar power rated engine if both are being given full throttle, that's debatable.

Here is something for you Noya, every hear of coking the turbo? It is when you run the car hard for a period of time and don't let it cool down, you just turn the engine off. This causes the oil to bake inside the turbo, gumming it up. Now the average BMW driver isn't going to care and/or know about this. They will race up and down the highway, up and down city streets, turn off the car, and then when the warranty is up, have a few grand in repairs to replace the turbo/s. There is a reason why I will never by a used turbo car, this is one. You never know what the person has do to it before you.

Here is another little fact, more air=more gas. You don't add enough gas with the added air, you are running lean. This in turn causes the engine to actually over heat more, and causes more engine wear then running slightly rich. Don't believe me, what happens when you blow on a small fire, it gets hotter and larger, or the extreme being a forest fire, winds cause them to spread and get hotter.

As for oil changed at regular intervals, that is also debatable as to the length of time need in between oil changes. My large displacement truck for example can get about 6000-7000 miles before needing an oil change, with the oil still looking clean. Turbo cars, not so much. And here is a novel idea, an oil cooler for an N/A engine, look, longer oil life now too.

why is it that people keep ignoring the fact that most stock turbocharged cars come with intercoolers... (u know that little sound that u hear going for a while even after u turned off the car)... that little intercooler does just wat its supposed to do; allow the turbo to cool properly so the turbo doesn't get coked up...

secondly, the diagnostic system on the BMWs and just about any car worth having will tell u when the oil needs to be changed... no guesswork...

some avatar u are... step ur game up man... u gotta have points worth making before u start shooting off... its good that u brought those things up though... after all people need to know whats wat... peace... i don't need turbo anyways... DOHC iV-TEC... nuff said... same performance less the servicing...

Uh, intercoolers don't cool oil, and they don't cool anything after the engine is turned off. Synthetic lubricants help reduce "baking", and an electric aux oil pump would pretty much take care of the problem altogether. If a high dollar car like a BMW doesn't have those things, it should.

It was Road & Track or Motor Trend who were testing the new Infiniti G37 against the BMW 335i (turbo of course) at Streets of Willow, California. Then, after half a morning of journalist's testing, the BMW simply cooked? Burned? No, not working anymore, you're expensive BMW...The G37 was good to go the whole afternoon. I've heard BMW was looking into the problem...apparently you're not supposed to drive it like a G37 can in sunny California...hummm.

Yeah, BMW got it right with Turbos...NOT.

I wonder what the resale value of those 335i will be. I would buy one new, with the premium extended warranty (and if I wanted to waste money and pass on the G37). Now I know I would never buy one used.

Just google 335i overheating and you'll get the picture. I wonder why this twin turbo V8 should be rated any better. Let's wait and see it against the new Infiniti M50,

LMAO. You're kidding, right? You better hope that your inter cooler isn't cooling oil, because your engine would run so rich it would explode. The inter cooler cools air after a turbo or super charger to make the air densier do to the heat generated by super charing and especially turbo charging.

As for your DOHC-ITEC, where is the torque? My 4500 lbs 4 wheel drive truck can make it up hills faster strating in thrid. Heck, the Hummer with a trailer can make it up the hill faster. Also, the gas mileage is horrid. 21 for a 237 hp car? That is sad. As pointed out, just about any large displacement car owns it and gets the same or better gas mileage. Some making nearly twice the power. I think you need to do your homework first. Inter cooler cooling oil, lmao.

Oh and Noya, I don't think anyone has ever made mention of a chevy bi block, just small blocks. Oil coolers prolong oil life, not turbo life.

@Avatar: thats 21mpg city. Most trucks don't achieve that highway. And I have a intern who drives the Civic Si sedan and gets 29 mpg highway. You can drive just about any car into the 30 mpg mark and nearly any car down below 10. I can easily take a 2002 Civic and get 43mpg, but when I roast the tires and slide around on the track i've gotten down to 13 before. Similarly, if you were to drive a new Cadillac Escalade at 40mph instead of 55 on the highway, I promise you will get MPGs in excess of twenty. I've done it before (note: this excludes anyone who is a jackass and limits it to second gear).

@Sphere: that wasn't the 335i vs the G37: that was the 335i vs the G35 two years ago, with a test model before the 335i was in wide release. BMW fixed the problem for free(turned out someone ordered and then manufactured with the wrong parts at the Spartansburg plant).

I have a buddy with a 335i. Its never coked up, and he does drive it hard.

Also, I think most people here are not giving BMW drivers any credit. I drive a 550i, have a Masters in Accounting and Finance and a minor in electrical engineering. Anyone here claim similar bragging rights to education? Or my 6 figure salary? No? Anyone here ever met Warren Buffet? I have. Shook his hand and got my picture taken with him too. 6th most magical moment of my life.

For more on 335i's that run just fine (and about their owners who read the manuals, unlike most car buyers), go to 6speedonline.com and hit up the BMW section. Warning: its a 997 enthusiast site with other people there only on the 997 people's good graces.

People who don't admit the superiority of the P-car and who actually think anything is faster (true or not) will be taunted. People with dignity after the original round will be taunted again. Survivors of the vicious verbal attacks will be banned.

Oh and about a 550i: can't imagine why they brought back the 4.4 when they have this 4.8 just sitting here. Its already in use on the 550i for crying out loud? Are there massive reliability problems and I am the only one without them or something?

Maybe once I have a chance to examine it I'll rig dual turbos to my car and see what happens..... of course, being me I'll wait for the warranty to die...

Shouldn't this be called the 544i since BMW usually designates the first number as the model and the second two numbers the engine displacement in liters, except when they screw around like the 325 that was really a 2.8l?

@Allen, I don't know why you feel the need to brag about your education. Fair enough. I have a PhD (Summa cum Laude), so you may call me Dr. from now on.

BTW, the Motor Trend article is online, yes, it was against the G37 (who won the comparo) and the 335i did overheat.
Quote:

Google this, you'll find many relevant pages about this, including the MotorTrend comparo

Quote:
"At the end of a couple enervating loops in both cars, we're surprised by three things: the fact that neither car could run away from the other, that neither demonstrates a clear edge in handling, and-yikes!-the BMW's oil temperature is near the peg at 280 F-40 degrees shy of system shutdown. This isn't a hot racetrack; it's a cool, 75-degree misty morning. Munich: We have a problem."

So I guess the problem was not exactly restricted at the track.

If the 335i against the older G35 also cooked in a previous test, this only means BMW didn't do its homework.

I will agree Allen that how you drive a vehicle greatly effects gas mileage. My truck around town averages about 15.5 mpg if I am reving it up to 2500-3000 rpms. If I keep it below 2k, I can get it to move up in the 16s. Now as for pure highway, I hit 18 cursing at 75 reving at 2100 rpm. And as for trucks getting 20+, my father's does this cursing at 65-70 and gets just under 21. Reason for the better mileage, he is 2wd, I am 4wd. More weight, drive train lose, and drag.

Now as for education comment, I won't deny it's not important. At the same time however, I am also still in school, online courses to be exact. Reason for this is my 6 figure job has me running around the country doing work for politics, famous people, and large corporations week in and week out. Paul Hewson is probably the coolest person I have ever met and talked to. Bragging gets no one anywhere, because there is always someone who has done more, seen more, knows more, makes more, etc etc.

Hello and,

you're all writing like a gaggle of jackasses. It's called a turbo-timer. It prevents coking as you describe it as it properly cools the turbo/s.

Secondly, Turbocharging almost always creates more thermal effeciency at any given power output, period. The 4.4L is going to a. be rated very conservatively and b. have a large envelope of potential for tuning. I'd take guess at around 500hp and 550 lb/ft of torque with proper ECU tuning; much like the 335I and D are supremely tunable, the 4.4L is going to follow-suit.

The only reason Merc and BMW had stayed away from Forced-Induction on their standard models was the technology with regard to the cost of manufacturing proper electronic hardware was too expensive to justify the gains. It's not any longer, especially considering the environmental incentive. IE. the 1.4L twincharger from VW AG.

I'm a secretary and I also work in a hospital as a CNA. I made 80K over the past 4 years combined. I've met a ton of moviestars cause I am one. I've lived in 4 countries. I have a picture with Bo Derek's dog. I graduated Magma Cum Lightly from the Universidad de Ingolstadt in Berlin, Scotland.

Turbo timers don't exactly come stock with cars.

Turbo charging also requires more gas and lowers the density of air thanks to the added heat. Without proper cooling of the air, the engine is more prone to knock.

The reason why companies still away from forced induction is because it stresses the engine more. It also adds more complexity with more moving parts. Things have to be made stronger as well, which adds weight. Turbos also add heat to the engine bay, and heat is the enemy. More stress, more heat, more weight, more moving parts, less reliability. Can they be made to be reliable, sure, but they won't be as reliable as a comparable N/A engine.

Yeah that's not really true,

It's cost-benefit analysis that drives most automotive companies engine decisions not estimated reliability. The heat is there already (as wasted exhaust energy) and is only being utilized and exposed closer to the head/intake with turbo'd vehicles. If you want simplicity, buy a ramjet. I'm not comparing zip-drives and CD-ROM drives.

I guarantee that a conservatively boosted 2-liter Honda engine would be cheaper to maintain and operate than an NA 2-Liter Honda engine given the same RPM, average vehicle speed etc.., if only for the fact that the greater power output of the boosted engine would allow greater gross-weight for given engine load/speed. Don't like the F22 comparo, well you can draw the same conclusion with any small block chevy - all of which would be benefited by even more low-end torque generated by a conservative turbo setup - allowing even taller gearing and lower RPM's on that cruise to Vegas.