Tuning e39 523i to 525i - it is possible?

[feisaldzul]

this conversion is pretty straight forward.

u can get tonnes of resources on the net about this and u can also DIY if u are adventurous enough.

i got my friend to do it for me. no hassle watsoever.

alternatively u can try loafer's contact and also Ah Wai of BM World in Desa Tun Razak.

yes on the lower rpm the car is a bit lethargic but it revs freely in the higher rpm.

loafer is on the e36 (loafer, please correct me if I am wrong here) which requires chipping to remap but for the e39 kakis is a direct remapping of the ecu which is much easier.

 

[loafer]

this conversion is pretty straight forward.

u can get tonnes of resources on the net about this and u can also DIY if u are adventurous enough.

i got my friend to do it for me. no hassle watsoever.

alternatively u can try loafer's contact and also Ah Wai of BM World in Desa Tun Razak.

yes on the lower rpm the car is a bit lethargic but it revs freely in the higher rpm.

loafer is on the e36 (loafer, please correct me if I am wrong here) which requires chipping to remap but for the e39 kakis is a direct remapping of the ecu which is much easier.

I think for E36 you are not required to replace the chip. That's as far as I know la. Don't have any experience with remapping cause I never bothered to do it for my car and I only know of 1 other person in my group of E36 kakis who has done the remapping but unfortunately he has already sold his car. From what I can recall he didn't change his chip.

Maybe others who are more familiar with the process can comment on this for the E36.

 

[WGT523]

I think for E36 you are not required to replace the chip. That's as far as I know la. Don't have any experience with remapping cause I never bothered to do it for my car and I only know of 1 other person in my group of E36 kakis who has done the remapping but unfortunately he has already sold his car. From what I can recall he didn't change his chip.

Maybe others who are more familiar with the process can comment on this for the E36.

Hi Loafer, thank for the contact.

I found this website...interesting....http://forums.bimmerforums.com/forum/showthread.php?t=544874
but I am not good at reading the graph on tq and hp wrt to rpm. I alway thought the lower the rpm the better. Does this meant that the swapping from M52 to M50 manifold will increase tq and hp but at the same time increase the fuel consumption ? :stupid: Anybody care to enlighten us?

cheers

 

[feisaldzul]

I think for E36 you are not required to replace the chip. That's as far as I know la. Don't have any experience with remapping cause I never bothered to do it for my car and I only know of 1 other person in my group of E36 kakis who has done the remapping but unfortunately he has already sold his car. From what I can recall he didn't change his chip.

Maybe others who are more familiar with the process can comment on this for the E36.

possible to remap if its the siemens ecu otherwise a chip is required

 

[bimmerholic]

The 523 & 525 M52 & M54 has the same max torque right? It make more sense to just upgrade to stroker kit 2.8 or better 3.0

or 3.2 perhaps...haha...hantu :top:

 

[Jerman]

The 523 & 525 M52 & M54 has the same max torque right? It make more sense to just upgrade to stroker kit 2.8 or better 3.0

No, M54 525i has higher torque.

 

[moots]

howdy benz,from the many forum write up I have come across,the m50 mnifold mod benefits the m52 single vanos engines most...in particular the 523i and 528i with massively improved driveability after a suitable remap.
maybe this widely acclaimed mod does not liberate as much for an m52tu or m54.

you seen the difference on the intake manifold size between the 528i m52 and 525i m50....wow........huge difference

 

[leforte]

M50 manifold mod only fits m52 single vanos engines.

m52TU or m54 engines uses a different manifold system and also a different cylinder head and inlet port design. m50 manifold can be "made" to fit but cost and performance gain/lost would be a real question mark on the reason to do so.

to get a 523 to 525 performance, a tuning remap is all that is required.

 

[dominic]

loafer,apart from rm700 for the hardware,how much were you charged for the remap?
and where did u have this done?from the writeup in many forums,this simple mod liberates about 30bhp to bring it up to around 220bhp.i am keen.

Try to change the cams by using M3 3.2L cams
will improve by 30bhp.
is a must....
Dont know Logic or not....
i changed mine very powerfulll

 

[bmw7833]

- M50 manifold
- M3 3.2L cams
- Tuning chip

What else?

 

[initialM]

- M50 manifold
- M3 3.2L cams
- Tuning chip

What else?

Supercharge:sleep:

 

[bmw7833]

Supercharge:sleep:

Worth meh?

If SC, better i change car to 530i liao.

 

[initialM]

Worth meh?

If SC, better i change car to 530i liao.

For my car worth. 530=231hp, My overhauled, port & polish 528=193 plus SC hp = xxx? Then not include money spent on maintenance, mod & accessories.:sleep:

 

[bmw7833]

For my car worth. 530=231hp, My overhauled, port & polish 528=193 plus SC hp = xxx? Then not include money spent on maintenance, mod & accessories.:sleep:

For your car, worth la..if i now own 528i then lain story lar..

 

[initialM]

For your car, worth la..if i now own 528i then lain story lar..

Power lust never end. 2.5 not enuff get 2.8 then not enuff get 530 then not enuff SC then not enuff the real Ultimate Driving Machine ///M5:sleep:

 

[bimmerholic]

Power lust never end. 2.5 not enuff get 2.8 then not enuff get 530 then not enuff SC then not enuff the real Ultimate Driving Machine ///M5:sleep:

Kalu M5 pun tak enough, SC & turbo charge the M5...car sure giler wan!

 

[loafer]

- M50 manifold
- M3 3.2L cams
- Tuning chip

What else?

You can always stroke it if you don't want forced induction

 

[initialM]

You can always stroke it if you don't want forced induction

Yup thats the best option to get power & maintain NA durability.
Oh ya if do engine stroke, need to upgrade/remap ECU arr?

 

[alpina b5]

is it possible to turbo the engine?

 

[seewai]

is it possible to turbo the engine?

I believe anything is possible as long as one's wallet has infinite depth.