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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > RB Turbo's N55 Turbo Upgrade, rounding the bases



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      08-08-2013, 07:39 AM   #45
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Originally Posted by Dozhdbog View Post
Regarding forged internals (just one thread of many):
http://www.e90post.com/forums/showth...=589025&page=2
Better thread: http://www.e90post.com/forums/showthread.php?t=664993

N54= Forged Crank and Rods, High Quality Cast Pistons.
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      08-08-2013, 12:49 PM   #46
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People still argue over this?
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      08-08-2013, 01:43 PM   #47
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Quote:
Originally Posted by scottp999 View Post
Better thread: http://www.e90post.com/forums/showthread.php?t=664993

N54= Forged Crank and Rods, High Quality Cast Pistons.
Best thread:
http://www.e90post.com/forums/showth...d+rods&page=11

I forgot about the crankshaft.
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      08-08-2013, 02:58 PM   #48
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Originally Posted by Dozhdbog View Post
Best thread:
http://www.e90post.com/forums/showth...d+rods&page=11

I forgot about the crankshaft.
Nice thread. Searching ability is strong with this one.


Rob - can't wait to see who will take on the roll of early adopter and push their N55 toward its limits.
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      08-08-2013, 03:16 PM   #49
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You would think the aftermarket would be all over the N55 like a wet blanket... at least fabricators...

The N55 is now available in EVERY SINGLE MODEL in the bmw lineup. I'm sure the production numbers even just in the last 2 years dwarf the total N54 cars on the road.

BMW isn't stupid... they will make the engine assembly (block/head/intake and exhaust manifolds) fit in the same space because it costs less that way. Airboxes and intercooler pipes will be different, but someone who comes out with a slightly modular turbo kit for the N55 *should* sell way more of them than N54 kits if the tuning side pans out.
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      08-08-2013, 05:51 PM   #50
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Ordered all off the shelf AN hardware, hoses, and heat shield sleeving today for the oil and coolant lines (the custom pieces are complete)...

Next up is making a custom actuator mount, custom T3 Twin Scroll flange, and custom V-band collectors.
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      08-08-2013, 05:54 PM   #51
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Quote:
Originally Posted by boostd92 View Post
but someone who comes out with a slightly modular turbo kit for the N55 *should* sell way more of them than N54 kits if the tuning side pans out.
As you indicated, should being the key word, but yeah lets hope so!
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      08-08-2013, 10:40 PM   #52
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Quote:
Originally Posted by boostd92 View Post
You would think the aftermarket would be all over the N55 like a wet blanket... at least fabricators...

The N55 is now available in EVERY SINGLE MODEL in the bmw lineup. I'm sure the production numbers even just in the last 2 years dwarf the total N54 cars on the road.

BMW isn't stupid... they will make the engine assembly (block/head/intake and exhaust manifolds) fit in the same space because it costs less that way. Airboxes and intercooler pipes will be different, but someone who comes out with a slightly modular turbo kit for the N55 *should* sell way more of them than N54 kits if the tuning side pans out.
Believe it or not, some of those parts are even more compatible than you realize.

Last edited by Jon@NL; 10-22-2013 at 11:32 AM.
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      08-08-2013, 10:42 PM   #53
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Quote:
Originally Posted by boostd92 View Post
You would think the aftermarket would be all over the N55 like a wet blanket... at least fabricators...

The N55 is now available in EVERY SINGLE MODEL in the bmw lineup. I'm sure the production numbers even just in the last 2 years dwarf the total N54 cars on the road.

BMW isn't stupid... they will make the engine assembly (block/head/intake and exhaust manifolds) fit in the same space because it costs less that way. Airboxes and intercooler pipes will be different, but someone who comes out with a slightly modular turbo kit for the N55 *should* sell way more of them than N54 kits if the tuning side pans out.
Well said!! I've been worried with the F30 3 series variant, the upcoming 2 series, the M135i in Europe, 6 series, etc, I was hoping they shared the same underlying hardware. Only differnce being the DME which can hopefully be reined in with a Flash and JB4. Damn it, why so many variables to make this work out?
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      08-09-2013, 08:10 AM   #54
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Quote:
Originally Posted by Jon@noLimits View Post
Believe it or not, some of those parts are even more compatible than you realize.

The X1 35i for example uses 100% the same intercooler, piping, downpipe, chargepipe, and oil cooler from the 135i and 335i. I'm inclined to think that this turbo upgrade will fit just fine on it.

Imagine a 750hp X1
As long as the space between the passenger frame rails and the engines are all the same, it should work on all of them. We are going to do all we can to keep the manifolds and system as compact as possible. Ultimately the turbo is very large, with an internal wastegate which requires an actuator (adds to the bulk), so some creativity will definitely be required in the design. We plan on using many custom billet machined components to make this all possible. Keep fingers crossed!

Rob
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      08-09-2013, 11:55 AM   #55
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Quote:
Originally Posted by Rob@RBTurbo View Post
As long as the space between the passenger frame rails and the engines are all the same, it should work on all of them. We are going to do all we can to keep the manifolds and system as compact as possible. Ultimately the turbo is very large, with an internal wastegate which requires an actuator (adds to the bulk), so some creativity will definitely be required in the design. We plan on using many custom billet machined components to make this all possible. Keep fingers crossed!

Rob
This is some good stuff man cant wait
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      08-09-2013, 03:58 PM   #56
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Quote:
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Just stay tuned. As said prior will cross the bridge of who is going to test when we get there. Very busy over here, so excess emails/pms/calls about testing is something I want to try to avoid in this interim. Those who subscribe to this thread will be well aware when the time comes as I will make the update here, and at that time we shall be ready to work out the details.

Thanks,
Rob
Another subscribed F30 guy here! My car is becoming the F30 shop car over at AutoCouture Motoring, so taking on a great project like your upgraded turbo would be exciting for us over here on the East Coast. Our in house photographer does work for Perfomance BMW magazine and Ultimate Klasse online magazine, so it would definitely be well documented step by step as well.
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      08-10-2013, 06:56 AM   #57
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How Much is this turbo going to cost?
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      08-10-2013, 07:00 AM   #58
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How Much is this turbo going to cost?
For the entire kit will not know until complete. The turbo by itself (smallest option) is around $2400 though. It's definitely safe to say it will be north of $5k for the kit, if that helps any.
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      08-10-2013, 11:47 AM   #59
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Ok so 5k for turbo and about 2k for install? With Cobb and fmic I am looking closer to 9k... Now what do I do? M3/M5 or this? lol
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      08-10-2013, 11:54 AM   #60
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Ok so 5k for turbo and about 2k for install? With Cobb and fmic I am looking closer to 9k... Now what do I do? M3/M5 or this? lol
Please note I indicated the kit will easily be North of $5k (meaning more), this is just to let those who may think it is going to be less than $5k feel no need to hang around and watch production with intent to buy. In the real world it is unknown what it will be until it is all done, when that is all costs will be added for the components/labor/time/and profits. The big problem with this kit is that the EFR line of turbos are very expensive, especially the twin scroll units that we are utilizing.

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      08-10-2013, 01:12 PM   #61
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Just arrived is some Off the Shelf AN hardware bits (and heat wraps). Next up is getting the piping so we can get the modular collectors machined.
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      08-10-2013, 01:36 PM   #62
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Anyone thinking about this, don't forget to budget $2000 for a proper LSD. No way in hell I would drive one of these cars tuned up to 500+ bhp without one. The pricing of a bit over $5000 seems reasonable to me. I think I paid more than that for the hardware to convert my biturbo S4 to full stage 3 over a decade ago. I think a good estimation of costs are as follows:

Turbo kit: $5500
FMIC: $1000
Software: $1000
LSD: $2000

So you will be somewhere around $10,000 in hardware. Installation cost will vary with your location and you ability to diy or not. If you're paying someone else to turn wrenches, you will be well into $12,000 to be on the road. Not to rain on any parades but I think many members here need a little reality check in terms of real costs. You have to pay to play.

One thing I am not clear on is if this kit is going to come with its own dedicated downpipe or not. Rob?
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      08-10-2013, 01:50 PM   #63
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Anyone thinking about this, don't forget to budget $2000 for a proper LSD. No way in hell I would drive one of these cars tuned up to 500+ bhp without one. The pricing of a bit over $5000 seems reasonable to me. I think I paid more than that for the hardware to convert my biturbo S4 to full stage 3 over a decade ago. I think a good estimation of costs are as follows:

Turbo kit: $5500
FMIC: $1000
Software: $1000
LSD: $2000

So you will be somewhere around $10,000 in hardware. Installation cost will vary with your location and you ability to diy or not. If you're paying someone else to turn wrenches, you will be well into $12,000 to be on the road. Not to rain on any parades but I think many members here need a little reality check in terms of real costs. You have to pay to play.

One thing I am not clear on is if this kit is going to come with its own dedicated downpipe or not. Rob?
Please do not quote the cost of the turbo kit (I realize it was an estimation). Not trying to be harsh, just trying to avoid PM's or any sort of propaganda of what the cost will be (for some reason people see a number, and expect that it is official despite you clearly saying estimation). As said, will be an unknown until it all is added together.

As for the LSD, cool mod, but totally not necessary. Recommended, sure.

But with you on all other accounts. You do not get into this power territory with $2000, especially when the turbo itself is around $2500. Ultimately as with any modding of a car there are other mods to get, if you do not have them already. So yes anyone with a completely stock car who thinks they are going to jump in and get this kind of power for cheap are sorely mistaken.

As for the downpipe. It is still up in the air. Likely will have to make a new one if an adapter of sorts can not be made. Will know more as we move along (and get an N55 downpipe in hand, so if you have one let me know as I am looking for one- OEM only please). Trying to do anything possible to reduce costs of the kit while upholding very high quality and fitment. Fitment is key to me, if the unit can not be installed nicely and in a reasonable timeframe then it is not a unit worth selling (big reason why we didn't move forward with Stage 3s on the N54, fitment is garbage).

Thanks,
Rob
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      08-10-2013, 04:18 PM   #64
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I don't have a spare stock downpipe. Mine is still on the car since I run only the OEM PPK and won't put up with any bullshit SES lights or cat readiness codes. No one has ever developed a true fix for N55 catless downpipes.

The downpipe solution will be interesting. In visualizing how the stock setup is arranged and how large I think your new turbo is, I can't see that working.

EDIT: just went back and looked at your pic on page 1. It is damn close in size.
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      08-10-2013, 07:19 PM   #65
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I don't have a spare stock downpipe. Mine is still on the car since I run only the OEM PPK and won't put up with any bullshit SES lights or cat readiness codes. No one has ever developed a true fix for N55 catless downpipes.

The downpipe solution will be interesting. In visualizing how the stock setup is arranged and how large I think your new turbo is, I can't see that working.

EDIT: just went back and looked at your pic on page 1. It is damn close in size.
The pic is somewhat deceiving, the EFR housings are quite a bit larger as they have much more potential than the very limited OEM housings... but the lengths are similar. I do believe the EFR will be a little more forward facing (towards front of car), so there is possibility of an adapter- and if so we will do that to save costs. There are a few possibilities where we think we can make adaptive components to make other pieces work, and where it is possible we will... provided it makes sound engineering sense.

Rob
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      08-12-2013, 08:34 PM   #66
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Couple pics from a little progress today. This should be enough to get the modular v-band collector(s) machined now. I think.
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