128i vs 125i

[Dackelone]

Originally Posted by DustinDep

anyone have a website for this company in germany who does this conversion??

I think this is it...

http://www.ds-motorsport.de/

[DustinDep]

Thanks!!

[m_thompson]

Originally Posted by Evice

I totally agree that 130i never had the DI, we can skip that claim.

I just checked www.realoem.com and it looks like the intake is same... I just can't understand why the intake needs to change by tuners, while bmw uses the same..

Edit: Well I actually realized that part#s are different.

130i intake manifold: 11617559523
128i intake manifold: 11617559524

RealOEM says that my California SULEV emissions 128i with the N51 engine has the 11617559523 intake manifold, the same as the one on the 130i.

[jksgoh]

im not so sure about the different intake manifold??? as both the 125i and 130i have the same part numbers...

[pousa13]

the intake manifold is said to be the same. some people are diskussing wether there is a software change in the manifolid or not. a part which really is differen between 130i and 125i is this one:
http://www.realoem.com/bmw/showparts...65&hg=13&fg=20 PART 10
its only worth changing it when you change the software as well

by the way - wintertuning (german website) also offers a software mod of the 125i to reach ~274PS
http://wintertuning.de/index.php?opt...111&Itemid=112

[ManGGouste]

Cool and thanks for the links,

I've sent'em an email to ask for an offer.
By chance, there's Daehler not far from my home...

[Evice]

let us know if you hear anything from the dealer.

[jabwind51]

Originally Posted by pousa13

the intake manifold is said to be the same. some people are diskussing wether there is a software change in the manifolid or not. a part which really is differen between 130i and 125i is this one:
http://www.realoem.com/bmw/showparts...65&hg=13&fg=20 PART 10
its only worth changing it when you change the software as well

by the way - wintertuning (german website) also offers a software mod of the 125i to reach ~274PS
http://wintertuning.de/index.php?opt...111&Itemid=112

This is the part number that is on the 130i:

10 Rubber boot 1 13717559121



The 125i and 128i have part number:

128i E82 Coupe/E88 Vert: 10 Rubber boot 1 13717536004 $37.68 +core
125i E82 Coupe/E88 125i: 10 Rubber boot 1 13717536004 $37.68 +core

[JimD]

There is a bunch of information on parts differences in the "my 128 project" thread in the engines area. The 265hp N52 has a different intake versus some of the others, different injectors versus others, and a different exhaust (2 pieces) versus the lower hp versions. The parts would be pretty expensive. There is also a thread in the 3 series forum where a couple guys have installed the intake manifold of the higher hp version and gotten less than 10hp. If you put in all the different parts, I think you would get more than 10 hp but you might also need reprogrammed.

There are many parts that are the same, like the intake and exhaust camshafts, intake and exhaust valves, etc..

If you really want to do this, I would open up a couple windows in RealOEM, put your vehicle in one window and a vehicle with the hp you want in the other. Check the intake and exhaust parts and see how many you need. I think it's possible to change but I think it will be several thousand dollars.

The reason reprogramming gets all the hp in turbo motors is they just jack up the boost. You can't do that on a NA engine. You have to reduce restrictions to the airflow in the intake and exhaust.

Jim

[jabwind51]

Originally Posted by JimD

There is a bunch of information on parts differences in the "my 128 project" thread in the engines area. The 265hp N52 has a different intake versus some of the others, different injectors versus others, and a different exhaust (2 pieces) versus the lower hp versions. The parts would be pretty expensive. There is also a thread in the 3 series forum where a couple guys have installed the intake manifold of the higher hp version and gotten less than 10hp. If you put in all the different parts, I think you would get more than 10 hp but you might also need reprogrammed.

There are many parts that are the same, like the intake and exhaust camshafts, intake and exhaust valves, etc..

If you really want to do this, I would open up a couple windows in RealOEM, put your vehicle in one window and a vehicle with the hp you want in the other. Check the intake and exhaust parts and see how many you need. I think it's possible to change but I think it will be several thousand dollars.

The reason reprogramming gets all the hp in turbo motors is they just jack up the boost. You can't do that on a NA engine. You have to reduce restrictions to the airflow in the intake and exhaust.

Jim

All good info Jim. Thanks.

[ManGGouste]

Yup, I got an answer.

It costs 900€ and they do a Spring price down to 700€...
I'm already planning a few vacation days near Munich ...

http://wintertuning.de/images/storie...ter-125i_1.jpg