^+1 - I agree, some very cool new tech is incorporated into these engines.
Im guessing that the low pressure fuel injectors also have something to do with the dsg fart on the RS5 were it drops a tiny bit a fuel into the exhaust.
It is very interesting tech non the less, but just more shit to go wrong.
I think the fart is an intentional misfire to bring the RPM’s down to where they should be for the next gear.
I don’t think the current generation FSI/TFSI motors have that secondary injector anyways. Pretty sure that’s coming for the new motors, judging by the mentioning of a 1.8T which does not exist yet
are they recalling our 4.2 FSI engines for the ne RS5 joint? 
remote mount a second turbo, run compounds like diesels where the big turbo blows through the small turbo and you can make obscene boost with good reponse and not pushing the turbo way out of its efficiency range
^ you read about BMW using a 3 turbo setup on it’s new BMW M3. It has two normal turbo’s like on the 335, but then an 3rd electric clutch operated turbo that engages/disengages based on need etc to make the car more smoothly driven (think the idea is for low speed etc). It’s crazy and just sounds like an expensive repair bill as well as a nuisance for tuning.
yeah thats gonna be a nightmare, I wouldnt want a clutch on something spinning as fast as a turbo… if they just leave it in there and open the wastegate and diverter valve it really should just sit there and idle. Or use a vtg turbo
Well I’m interested to see more info come out about it. Hopefully it wouldn’t be a nightmare to just remove and tune around it entirely. With how much activity the BMW aftermarket scene gets, it’ll probably be tested at some point pretty early on.
now is it a larger turbo that blows through the twins? If so, assuming the motor is sufficiently strong, someone could make an eliminator kit with a factory style flange that would bolt in… or take the stock turbo and put in a standard center cartridge and maybe billet wheels and get some more flow out of it
that was a rumour. Squashed as bullshit. (about the M3 triturbo)
ahh, good. I’d just read about it on a main auto site a while back. Hope so, and hope they don’t go that route anytime soon. Sounded more like a nightmare then an advancement.
Well interestingly enough, it’s not happening in the M3, but it is happening in another line of cars that are being called part of the “M Division”
http://smh.drive.com.au/motor-news/bmw-diesel-three-turbos-0100kmh-in-47-seconds-20120126-1qj18.html
Brief Video (mentioned at 0:36 mark)
http://www.youtube.com/watch?v=dD8F3rmACvo&feature=digest_thu
[quote]BMW is pinning its hopes of increased sales success in the performance car ranks to a revolutionary tri-turbocharged 3.0-litre in-line six-cylinder diesel engine set to make its public debut in a range of potent new four-wheel-drive M division-developed models at the Geneva motor show in March.
The M550d xDrive sedan, M550d xDrive touring, X5 M50d and X6 M50d have all been conceived to provide performance approaching that of their celebrated petrol engine M division siblings, but with vastly better fuel economy, significantly lower carbon dioxide emissions and more affordable pricing.
The four cars represent an M division first, with all running a newly developed version of the German car maker’s 3.0-litre in-line six-cylinder common rail diesel engine.
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It adopts a patented tri-turbo induction system that BMW sources suggest is set to revolutionise the efficiency and performance credentials of traditional combustion engines, both in diesel and petrol formats.
The quartet of new performance diesels, pictured here officially for the first time, form the basis of BMW has dubbed its “M Performance” range. They are planned to slot into their respective line-ups between the top performing standard model and full-blown M model in terms of outright performance, dynamic ability, equipment levels.
In the case of the headlining M550d saloon, this would be between the 550i and recently introduced sixth-generation BMW M5.
The X5 M50d and X6 M50d will be the first of the new M Performance models to head into Australian showrooms later this year. BMW’s decision to produce the M550d xDrive sedan and M550d Touring exclusively in left-hand drive guise means they will not be offered locally.
However, Drive can confirm that moves are afoot to add similarly powered M550 sDrive sedan and M550 sDrive touring models to BMW’s Australian line-up.
These yet-to-be-revealed models, likely to get a public airing at the Paris motor show in September, forgo the four-wheel drive system of the M550 xDrive sedan and M550 xDrive touring for a move conventional rear-wheel drive layout, as used by the M5.
Still, the BMW M Performance range won’t only be restricted to diesel models. “We’re close to finalising other additions to our new M Performance portfolio, including petrol engine models, which we’re planning to show before the end of the year,” revealed BMW M division spokesperson, Stefan Behr.
The new M division developed diesel engine comprehensively outguns BMW’s widely used twin-turbo 3.0-litre in-line six-cylinder, developing 280kW along with a sturdy 740Nm of torque between 2000 and 3000rpm.
These figures represent an 55kW and 140Nm increase on the most powerful version of BMW’s existing twin-turbo 3.0-litre in-line six-cylinder, as fitted to the 740d, giving the 2993cc unit a spectacular – by diesel standards – specific output of 94kW and 247Nm per litre of capacity.
While 138kW shy of the new M5 and its new twin-turbocharged 4.4-litre V8 petrol unit, the new M550d saloon boasts 60Nm more than its lauded M division sibling.
In each of the new M Performance models, the new engine is mated to a beefed-up version of BMW’s existing eight-speed automatic gearbox and, for left-hand drive markets, a specially tuned version of the German car maker’s four-wheel drive system.
Together, the new engine’s heady reserves and traction enhancing qualities of its four-wheel drive underpinnings are capable of propelling the M550d xDrive saloon with 0-100km/h acceleration in 4.7 seconds – or just 0.3 seconds slower than the new M5. Top speed, meanwhile, is limited to 250km/h.
But owing to the M550d xDrive saloon and M550d xDrive touring’s lack of right-hand-drive compatibility, versions planned for sale in Australia will come in rear-wheel-drive form – taking it even closer to the M5 in overall concept and resulting in a 70kg reduction in kerb weight – something that should ensure it operates on much the same performance plane.
Of the initial M Performance models earmarked for Australia, the X5 M50d an X6 M50d possess claimed 0-100km/h times of 5.4 seconds and 5.3 seconds respectively – or 0.7 seconds and 0.6 seconds slower than the X5 M and X6 M, whose twin turbocharged 4.4-litre V8 petrol engine delivers 408kW and 680Nm of torque, owing partly to more heavily overdriven gearing.
But while the X5 M50d and X6 M50d can’t quite claim to match their full blown M siblings for outright pace off the line, their respective combined cycle fuel economy figures of 7.5L/100km and 7.7L/100km better the X5 M and X6 M by a significant 6.4L/100km and 6.2L/100km respectively, giving them far greater range and CO2 emissions ratings, which at 199g/km and 204g/km, are a whopping 126g/km and 121g/km lower.
BMW’s familiar EfficientDynamics fuel saving features, including automatic stop/start, brake energy recuperation and on demand functions for engine ancillaries are all included as standard.
In keeping with its reputation of delivering cars with both outstanding handling, BMW’s M division has provided the M550d xDrive saloon, 550d xDrive touring, X5 M50d and X6 M50d with unique steering ratios, chassis settings and in some instances, chassis components, including track widths, body structure mountings, engine mountings, gearbox mountings consummate with their M-car siblings.
Each M Performance car will get subtle styling changes differentiating them from both their standard and M-car siblings. The interior of each car has also been given the M division treatment with unique stainless steel sills plates, leather bound dashboards, M specific steering wheels and seats among other changes.
Since its inception in 1972, BMW’s M division has concentrated solely on the development and sale of petrol engine road cars, including the existing M3, M5 and soon-to-be-revealed second-generation M6.
Its decision to enter the four-wheel drive diesel car performance ranks follows moves by rival Audi, whose latest twin-turbo 3.0 V6 diesel engine kicks out 230kW and 650Nm in the A6 3.0 TDI Quattro and is expected to appear in an upcoming performance orientated four-wheel-drive Q5 model planned for launch later this year.
[/quote]
AWD performance-ish cars to appease the guys like me in the north who won’t buy an M3 cuz it’s RWD
meh
p.s. where does the second injector(s) actually inject? I couldn’t review the PDF
Just look at the second post in this thread, lol.
oh nice. I just skipped over it
so an MPI injector for each cyinder?
That’s what it looks like. But holy crap, that’s a lot of injectors.
If you do the math, that’s 16 injectors for a V8.
That’s what they did in the C4 ZR1 Corvettes.
The general rule for those was, take just about everything you have under your hood and multiply it by 2.
hahahahaha
Now I’m waiting for Audi to announce they’re implementing trailing & leading spark plugs…since they seem to want to add double the components to their motors now. ;D