Any N55 HPFP failures yet?

[KingOfJericho]

I consider myself very active on here and I have yet to see one thread about a single N55 HPFP failure. I've seen several threads with TrackRat claiming to have seen several threads but not "bookmarking" them (wouldn't a simple search find them?) but nothing of any substance.

[RPM90]

Originally Posted by JB135MDCT

No Problems yet with N55.

In regards to this pointless "DCT is and automatic" argument, I say the 6MTers are in for a surprise when some old dude or some 17 year old chick who never drove a 6MT can now blow you guys away. It's a rude awakening. Maybe 6MTers should go back to manual choked carburetors, or anything that's controlled by a computer, how about mechanical boost control. Who needs an O2 sensor when you can use a manual knob.
For the record, if the M1 comes with only 6MT option then I shall miss the DCT. I'll be even more sad when a 135i w/DCT blows an M1 away. Time will tell.

What does a manual boost control compared to the O2 even have in common with actual boost pressure? Nothing.
The O2 doesn't control boost pressure, FYI.

Talk about being "blown" away.

[babyboss]

done 4000km & (with octane boosters) & so far all ok <>

[shotgunlab]

2011 135 coupe with DCT. just over 3k mi. all is good. I freaking love this car!

[JB135MDCT]

Originally Posted by RPM90

What does a manual boost control compared to the O2 even have in common with actual boost pressure? Nothing.
The O2 doesn't control boost pressure, FYI.

Talk about being "blown" away.

Response deleted, I'll try again. I was stating the "automatic" control of Boost and Fuel Ratio. Do you want to control them manually like your 6MT?

Hypocrisy?

[RPM90]

Originally Posted by JB135MDCT

Response deleted, I'll try again. I was stating the "automatic" control of Boost and Fuel Ratio. Do you want to control them manually like your 6MT?

Hypocrisy?

I'd like to answer that, but please explain what hypocrisy you are referring to.

In the "older" days of turbo's many of us did use MBC's, and yes, tuning was harder. I love modern boost control, just like I like fuel injection, and electronic timing, etc...
ABS, I'm still not completely there yet with that one.

[JB135MDCT]

Originally Posted by RPM90

I'd like to answer that, but please explain what hypocrisy you are referring to.

In the "older" days of turbo's many of us did use MBC's, and yes, tuning was harder. I love modern boost control, just like I like fuel injection, and electronic timing, etc...
ABS, I'm still not completely there yet with that one.

Hypocrisy is for a purest who insult MTers who now drive DCTs, because its an automatic, yet the purest have all sorts of automatic features in their car.

[jeremyc74]

Originally Posted by JB135MDCT

Hypocrisy is for a purest who insult MTers who now drive DCTs, because its an automatic, yet the purest have all sorts of automatic features in their car.

You don't make any sense at all.

[BMW269]

I hope there will be no HPFP failures. If so, then this can explain why BMW went from N54 to N55. And if the M1 engine S55 is based on N55, then the M1 will maybe also not get HPFP, what is WIN for a "track" M car.

[JB135MDCT]

Originally Posted by jeremyc74

You don't make any sense at all.

You don't know what hypocrisy means or am I abusing the term?

Perhaps dichotomy is a better choice.

[Evice]

I am sorry but why jeremyc74 is banned? I do not necessarily always agree with him, but I feel it is not right to do so. I hope I am seeing it wrong.

[RPM90]

Originally Posted by Evice

I am sorry but why jeremyc74 is banned? I do not necessarily always agree with him, but I feel it is not right to do so. I hope I am seeing it wrong.

He is?
If so, why?

Also, bump, for any info showing an N55 HPFP failure.

Anyone? Anyone?

[Evice]

I see his rank as "banned". and I never heard a N55 fail yet.

[JB135MDCT]

Originally Posted by Evice

I see his rank as "banned". and I never heard a N55 fail yet.

I might have tweaked his nerve about DCT?

[1SerieStud]

Originally Posted by maxnix

Yep, the reason most MT guys get the DCT is they realize it is quicker and better shifting than they could ever be. It was a hard pill to swallow, but after shifting with the paddles, most realize the DCT is far better than the driver thought he was before DCT.

Never manual all the way for me! No hesitations off the line either!

By the way, no long cranks or hpfp failures.

[Bavarian MW]

I have been through 4 hpfp replacements on my N54, the lease is due back now.

I have an N55 1 Series on order, so I have been digging in deep at my BMW Center. No hpfp's have been done for an N55 as of yet. Good news for sure, if this holds true! --MW


edit: yeah, its a 6sp manual. DCT is cool for sure, but good clutchwork is cooler!

[gavolant]

I'd hate to play devils advocate here ( esp since i just ordered a 2011 135) but considering it has been confirmed the N55 uses the same hpfp, what if we aren't seeing failures because of the time of year. In other words, most people who have the N55 engine haven't had their car through the winter months, and its my understand that this is when the majority of the long cranks seem to occur. Just a thought. Anyone in colder climates have any experience with the N55 hpfp?

[MarkR171]

I doubt cold climates is the cause. I know of a 335i and 135i with N54s that have had HPFPs replaced in Hawaii. No cold climate here.

[schmeah]

Originally Posted by TrackRat

Useful reading on efforts to determine the root cause of the HPFP failure issues with N54/55 engines.

http://www.surveymethods.com/preview...D0DB928284D794

Yawn ... you're getting very tiresome. Look at the model year data from your own link. See any 2011s? No you don't. That means no N55s yet. What's the matter with you anyway?

[FactorX81]

Does any one know if it is the N55 or the new 943/933 pump and the pump priming software or just some difference between the N54 and N55?

[MarkR171]

Just because the N55 uses the same unit, doesn't mean it's the unit itself that is at fault. It could be an issue with the N54 being too hard on the HPFP unit.

If BMW knew the part itself were faulty, why would they spend millions on developing a new engine only to use the same faulty part. Any reasonable person would understand it's not a good idea if that were the case.

Note 35% of long cranks and 25% of replacements occurred within 5000 miles with another 35% long cranks and 25% more of replacements within 10,000 miles. Many people with N55s have surpassed that and still no reports.

Also based on that survey, only 35% of survey takers actually had to replace their fuel pumps. 76% of those only replaced it once. I would also be willing to bet that there are more people who had no failure that never bothered to fill out the survey because they weren't affected.

[schmeah]

Originally Posted by TrackRat

Please rerain from the inappropriate comments. You are free to believe whatever you desire. The statistical info. is to show the effort to identify the root cause of the HPFP failures on the N54 engine. The N55 engine uses the same HPFP as the N54 engines and they have failed on the N55 engines. Any reasonable person would understand the correlation.

For the last time... you've said in about a half a dozen threads that the HPFP has failed on the N55, yet you've never once pointed to any link confirming a single failure. And don't post that crap about your "not booking marking every blah blah blah." Then when you are called out on your blatant BS, you fade away for a little while.

So my comments are not inappropriate and I won't refrain from pointing out your BS until there are documented failures on the N55. I won't be surprised if one eventually fails (hopefully not mine). Statistically it's bound to happen. But cut the crap until it actually does. Please don't slink away again. Let's hear your reply with some validation of an N55 failure.