N57 Bimmer Performance Center N57 Tuning

JMEngineer

New Member
Nov 9, 2018
1
#23
Do you know where the fuel limitation is coming from? (I would guess HPFP but I’m fairly new to the BMW diesels)
Any chance there are “bolt on” parts from the EU 535D or M550D that would offer a significant improvement?
 
Aug 11, 2017
1,712
Virginia
#24
Do you know where the fuel limitation is coming from? (I would guess HPFP but I’m fairly new to the BMW diesels)
Any chance there are “bolt on” parts from the EU 535D or M550D that would offer a significant improvement?
I'm somewhat curious about this, but in the realm of HPFP on the N57 it is the Bosch CP4 (4.2 specifically). In the truck world, known as the "ticking time bomb." The truck guys have bypass kits (it is a recirculatory system) to prevent damaging the whole fuel system should they self destruct (my N57 did), or CP3 (prior gen HPFP) retrofit kits.

I've not looked at the euro diesels to see if they run a different HPFP. I'd be surprised since Cummins, Powerstroke, Audi, BMW big motors all run the Bosch CP4. Maybe a different auxillary support pump?

Filippo
 
Jul 24, 2018
103
#25
We couldn't leave it alone. On our dyno we noticed that the intercooler was getting pretty hot and with heat a by product of power and heat can kill power we have custom fabricated a larger intercooler for our application. After the fabrication and install we were able to tell a huge difference in the temperature when performing testing on our dyno.

We started off with a core and custom fabricated the end tanks and tubes. I'll let the photos tell the rest.

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Custom fabricated mounts and testing fitment of the core in stock location.

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Welding up the end tanks

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Test fitting front bumper

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Tacking the pipes

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Vile89

New Member
Feb 1, 2019
1
Tuusula/ Finland
#26
Awesome project! Best way upgrade cp4 is to take 50d pump part number 0445010672. It allow you rise railpressure to 2200bar an it's capable around 500hp. You need just change highpressurelines from pump to rail or make shims between line and pump. I think US 535d is identific EURO spec 530d but you guys have 535d bigger injectors.

I have here in Finland f31 330d 190kw with wagner cooler, 3" turbo back exhaust, dpf/egr "swirl flaps" deleted, moded intake, stage 2 Snowperformance w/m with 100/175ml injectors. Tomorrow I'll install ported&polished exhaust manifold and Proturbo hybrid turbo, there is also 50d pump and 35d bigger injectors wating for install. Have them wait for spring that I got time to spend in dyno.

Sorry about bad language.
 

Torgus

Lieutenant
Nov 6, 2016
741
Boston
#27
Awesome project! Best way upgrade cp4 is to take 50d pump part number 0445010672. It allow you rise railpressure to 2200bar an it's capable around 500hp. You need just change highpressurelines from pump to rail or make shims between line and pump. I think US 535d is identific EURO spec 530d but you guys have 535d bigger injectors.

I have here in Finland f31 330d 190kw with wagner cooler, 3" turbo back exhaust, dpf/egr "swirl flaps" deleted, moded intake, stage 2 Snowperformance w/m with 100/175ml injectors. Tomorrow I'll install ported&polished exhaust manifold and Proturbo hybrid turbo, there is also 50d pump and 35d bigger injectors wating for install. Have them wait for spring that I got time to spend in dyno.

Sorry about bad language.
Mita Kuulu paskapää!

Your English is better than some native speakers on this forum.

Nice build.
 

doublespaces

Administrator
Oct 18, 2016
6,847
AZ
#28
I think you posted these already, numbers in this graph look lower?
 
Jul 24, 2018
103
#29
gah sorry these can be deleted I totally overlooked it. I thought I didnt post them Im sorry :(

sorry wrong graph too :( thats for a N57 stage 2 with downpipe... Im just screwing up all over the place today ugh
 

doublespaces

Administrator
Oct 18, 2016
6,847
AZ
#30
Its alright, I've been doing the same thing since working third shift. Never know what day it is.
 
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