Calvin West
Well-Known Member
Hi guys i understand the 125i is using a 3L N53 engine producing 220hp. If it is the exact same engine in the 630i 272hp, would be be possible to tune the 125i power up to 272hp?
BMW 125i engine
- Thread starter Calvin West
- Start date
Red_Bean_Bun
Well-Known Member
Re: BMW 125i engine
You referring to the n52 engine not n53 correct ?
I think the lower variants are de-tuned ......
You referring to the n52 engine not n53 correct ?
I think the lower variants are de-tuned ......
Last edited by a moderator:
Red_Bean_Bun
Well-Known Member
Re: BMW 125i engine
I think it is .....
I think it is .....
ac323;1062363 said:
Red_Bean_Bun
Well-Known Member
Re: BMW 125i engine
Heard n53 got issues with high sulphur petrol ......
Heard n53 got issues with high sulphur petrol ......
ac323;1062365 said:
Baby1M
Well-Known Member
Re: BMW 125i engine
The 125i 3L N53 being a NA and not force induction, it is not possible to tune it to 272hp unlike her muscled-up sisters 135i or 1M.
To bring up her figures up to 272hp, you have to consider many internal parts like: Cams, Conrod, Pistons, Mapping, Engine Cooling management, A/F ratio, etc (alternatively, is lup a turbo in and remap but careful with the engine cooling management).
Bluntly, please shelf the idea unless you intent to go the route shown in para-3.
* NA = Normal Aspirated / FI = Force Induction
Bro, consider this basics. Tuning up NA* with big Hp/Nm figures (e.g. 220-to-272, a 52hp gain) is not as easy as FI* rides.Calvin West;1062361 said:
The 125i 3L N53 being a NA and not force induction, it is not possible to tune it to 272hp unlike her muscled-up sisters 135i or 1M.
To bring up her figures up to 272hp, you have to consider many internal parts like: Cams, Conrod, Pistons, Mapping, Engine Cooling management, A/F ratio, etc (alternatively, is lup a turbo in and remap but careful with the engine cooling management).
Bluntly, please shelf the idea unless you intent to go the route shown in para-3.
* NA = Normal Aspirated / FI = Force Induction
Last edited by a moderator:
Baby1M
Well-Known Member
Re: BMW 125i engine
The 125i 3L N53 being a NA and not force induction, it is not possible to tune it to 272hp unlike her muscled-up sisters 135i or 1M.
To bring up her figures up to 272hp, you have to consider many internal parts like: Cams, Conrod, Pistons, Mapping, Engine Cooling management, A/F ratio, etc (alternatively, is lup a turbo in and remap but careful with the engine cooling management).
Bluntly, please shelf the idea unless you intent to go the route shown in para-3.
Lastly pardon my bluntness, I don't like to provide 'false expectation'.
* NA = Normal Aspirated / FI = Force Induction
Bro, consider this basics. Tuning up NA* with big Hp/Nm figures (e.g. 220-to-272, a 52hp gain) is not as easy as FI* rides.Calvin West;1062361 said:
The 125i 3L N53 being a NA and not force induction, it is not possible to tune it to 272hp unlike her muscled-up sisters 135i or 1M.
To bring up her figures up to 272hp, you have to consider many internal parts like: Cams, Conrod, Pistons, Mapping, Engine Cooling management, A/F ratio, etc (alternatively, is lup a turbo in and remap but careful with the engine cooling management).
Bluntly, please shelf the idea unless you intent to go the route shown in para-3.
Lastly pardon my bluntness, I don't like to provide 'false expectation'.
* NA = Normal Aspirated / FI = Force Induction
Red_Bean_Bun
Well-Known Member
Re: BMW 125i engine
The variants of the n52b30 bore and stroke specs is the same. So it was built for 272hp.
To de-tune it to 220 hp via the sw is what probably happened.
The variants of the n52b30 bore and stroke specs is the same. So it was built for 272hp.
To de-tune it to 220 hp via the sw is what probably happened.
Red_Bean_Bun
Well-Known Member
Re: BMW 125i engine
Think the entire engine block the same ....... but could be wrong .....
Hearsay its been done via sw already.
Think the entire engine block the same ....... but could be wrong .....
Hearsay its been done via sw already.
Baby1M;1062380 said:
Re: BMW 125i engine
BMW N53 - Wikipedia, the free encyclopedia
BMW N52 - Wikipedia, the free encyclopedia
BMW N53 - Wikipedia, the free encyclopedia
BMW N52 - Wikipedia, the free encyclopedia
Red_Bean_Bun
Well-Known Member
Re: BMW 125i engine
Guess it could starts at 272 hp and it could step down to 265 or 220 hp ......
So if you could crack the dme sw codes then you could release some potential based on the assumption entire engine block is the same ......
Guess it could starts at 272 hp and it could step down to 265 or 220 hp ......
So if you could crack the dme sw codes then you could release some potential based on the assumption entire engine block is the same ......
