[judec]

If U're looking for a thread about the injectors, here it is:
http://www.e90post.com/forums/showthread.php?t=67831

I have no idea how would U replace the GDI type piezo injectors in this engine, or by what would U replace them. Pls educate me.

[itsbrokeagain]

Originally Posted by hotrod2448

The main difference I come up with is Diesel has paraffin in it that acts as lubricant and gas does not..

Exactly. This is what I was wondering about myself. Im always finding myself pouring over diesel performance mags and such (boss has a ram 3500 that had a Banks 6-Gun on it at one point)...maybe there is a way to keep the pump lubricated with a similar chemical that can be instituted into the pump, and not have to be put into the gas tank at every fill up...because gasoline seems to eat away at everything it touches, so trying to have a slippery or lubed up pump is going to be I think the hardest hurdle to overcome.

[ward]

will this kit work with propane injection?

[judec]

propane injection? hmmm, did I miss something or U're using diesel in your 325 (or z4? geez). Or are U just joking to keep this thread alive?

[hotrod2448]

I'm hoping joking given the discussion of using diesel parts.

I found this drawing of the injector system on the VDO website:
http://usa.siemensvdo.com/press/rele...20070110_e.htm

Click the download high res image on the right side of the page.

They look similar in design to diesel injectors. Obviously there are a few critical dimension that would have to be the same since it goes directly into the combustion chamber and nobody wants fuel/fire blowing past it into the engine bay. It's not going to be as easy as new fuel rail and a walboro anymore.

[ArmyBimmerDude]

Originally Posted by ward

the cost of this kit plus install is going to be about the same as just buying an M3..........................

But with far more power than a M3

[ArmyBimmerDude]

Originally Posted by bnj

You read fine. Is their belief regarding the duty cycle based on something? Or is it just a belief?

I really dont know if its based on something or not after reading that, but if anyone knows its them considering the amount of time they've been with the car.....well and of course BMW.

[herbz]

haha.... good luck to anyone that tries this..... i'd like to see how long the N54's aluminum block lasts..... the engine isn't cast iron, supra numbers just aren't gonna be possible with this car. still GL to anyone who decides to get it.

[ArmyBimmerDude]

Originally Posted by herbz

haha.... good luck to anyone that tries this..... i'd like to see how long the N54's aluminum block lasts..... the engine isn't cast iron, supra numbers just aren't gonna be possible with this car. still GL to anyone who decides to get it.

I think 450-500hp will be ok. Over that and you're probably right, the engine isnt cast iron. I'm sure someone will eventually try those big numbers

[tjtanker]

agreed 450-500hp eqauls pooping in my pants on freeway onramps. plus i just have to throw this out there; BMW engineers arent stupid, the N54 is pretty well rounded, there is plenty to do before taking such a huge step as replacing the turbos. "evo8" has a good point, solve the fuel problems and then think about making hp. there is plenty of tweaking and tuning to do before replacing turbos.

[uberschnell]

Originally Posted by KenB

All you should need is an adjustable wrench and some JB Weld.

Don't forget It's all ball bearings nowadays. Now you prepare that Fetzer valve with some 3-in-1 oil and some gauze pads. And you're gonna need 'bout ten quarts of anti-freeze, preferably Prestone. No, no make that Quaker State.

[bnj]

Originally Posted by herbz

haha.... good luck to anyone that tries this..... i'd like to see how long the N54's aluminum block lasts..... the engine isn't cast iron, supra numbers just aren't gonna be possible with this car. still GL to anyone who decides to get it.

Aluminium block is not as strong as cast iron, but the block is not going to be an issue for a long long time. It has cast iron sleeves and I would be amazed if the block could not handle at least 700hp. Much more than what I'm after myself.

[WAYNEBO]

For us laymen enthusiasts, VERY well put:

Originally Posted by Evo8MRto335I

In my sincere opinion, we are approaching to the absolute limit of the turbos with the very few mods we have.

The Procede V2.0 has basicly squeeze every bit of HP available, the duty cycle on the injectors is dangerously close to it limits. The exhaust parts are maxing out the turbo capabilities.

If you think the BMW 335i will hit 700hp then I am afraid you are extremely optimistic. The 500 hp will be our ceiling for now with existing turbos,tune, injectors and exhaust and that is pushing it to its limits.

No one here really knows how much longer this tiny turbos will tolerate abuse running at 12-14 psi with other existing mods.

I insist that we must have a strong market to surpass this fuel system issue if we ever want to see the 700hp that you are talking about.

Secondly and far in the horizon is also the issue with the compression ratio, the love and hate history of big boost with compression ratio that you always have to compromise.

My 335i is my 15th turbo car I owned, I am not a tuner nor a expert nor a engineer but I have a lot of personal turbocar experience upgrading my previous cars to bigger turbos and I reiterate that we will be in hold until the fuel system issue is solved.

my .2c

[zenmaster]

Originally Posted by tjtanker

agreed 450-500hp eqauls pooping in my pants on freeway onramps.

My ideal weight to HP ratio is 7.5:1 or lower. One of my daily driver cars was 7.6:1 and consistently ran low 12s in 1/4 mi.
450HP and 500HP on the 335i should give 7.9:1 and 7.1:1. Lower than 7:1 starts feeling like a motorcycle - fun and addicting.

For reference:
G37 11.2:1
Audi S4 B7 11.2:1
335i 10.9:1
Porsche Cayman S 10:1
Mitsubishi Evo IX 10:1
135i 9.8:1
Z4M 9.8:1
Audi RS4 B7 8.6:1
Mustang GT500 7.8:1
Ferrari 360 7.2:1
Audi RS4 SC clubsport 6.8:1
Corvette Z06 6.2:1

[hotrod2448]

Originally Posted by zenmaster

My ideal weight to HP ratio is 7.5:1 or lower. One of my daily driver cars was 7.6:1 and consistently ran low 12s in 1/4 mi.
450HP and 500HP on the 335i should give 7.9:1 and 7.1:1. Lower than 7:1 starts feeling like a motorcycle - fun and addicting.

For reference:
G37 11.2:1
Audi S4 B7 11.2:1
335i 10.9:1
Porsche Cayman S 10:1
Mitsubishi Evo IX 10:1
135i 9.8:1
Z4M 9.8:1
Audi RS4 B7 8.6:1
Mustang GT500 7.8:1
Ferrari 360 7.2:1
Audi RS4 SC clubsport 6.8:1
Corvette Z06 6.2:1

Top fuel car= 3.33hp per 1lb.

[Doss]

Originally Posted by zenmaster

My ideal weight to HP ratio is 7.5:1 or lower. One of my daily driver cars was 7.6:1 and consistently ran low 12s in 1/4 mi.
450HP and 500HP on the 335i should give 7.9:1 and 7.1:1. Lower than 7:1 starts feeling like a motorcycle - fun and addicting.

For reference:
G37 11.2:1
Audi S4 B7 11.2:1
335i 10.9:1
Porsche Cayman S 10:1
Mitsubishi Evo IX 10:1
135i 9.8:1
Z4M 9.8:1
Audi RS4 B7 8.6:1
Mustang GT500 7.8:1
Ferrari 360 7.2:1
Audi RS4 SC clubsport 6.8:1
Corvette Z06 6.2:1

freaken Z06 wow!

[techlogik]

A TT kit like this one would be cool for the Bimmer.

http://videos.streetfire.net/hottest...af4dd0584e.htm

[RDSport]

Follow Link:

http://www.e90post.com/forums/showth...=78155&page=16

Thanks

[e92phreak]

Originally Posted by RDSport

Follow Link:

http://www.e90post.com/forums/showth...=78155&page=16

Thanks

Link broken.

[e92phreak]

Link fixed.