[thakid22]

Problem: I always thought part throttle response and shift points were wayyyy too conservative on the 330i. In regular D mode, the throttle and shift mapping are set for maximum fuel economy. DS mode is a touch too aggressive for leisurely everyday driving.

Solution: I have remedied this by flashing 325i transmission software on my 330i.
The 325i engine has less torque and less power, so BMW programmed its tranny software to downshift more readily and rev a bit higher before shifts. These differences are very subtle, but when applied to the more torquey and powerful 330i, it feels just right!

With 325i ZF software, the 330i feels more sprited, precise, and normal where shift logic is concerned. Stock 330i software is slow to downshift, often lugging a bit or requiring large throttle inputs to provoke a gearchange.

My 330i never experienced the throttle lag upon initial tip in that affect so many.
The throttle did at times feel soft, likely due to the being in a less than performance optimal gear. This sensation is now gone. In fact, with the 325i software the engine/transmissions response to the throttle now seems "normal", an upgrade from the dismal throttle/tranny mapping I've experienced in BMWs since the death of the mechanical throttlebodies.

Anyway, here are the details for anyone who may be interested.
The 2006 330i current ZF auto software is zb# was 7572901.

I Flashed to ZB # 7572903 which is the latest software for the 2006 325i.


There is also a zb# 7589227 which has better downshift rev match abilities (still not Infiniti level) but it is upshifts at 6500rpm, effectively reducing our N52 redline. I assume 7589227 is from an M54 5 series with the ZF, hence the low redline. But that's beside the point of this post. Just rambling.

[andrey_gta]

Excellent idea.

Do you think that this can be migrated to the other 328i/ 128i models??
Perhaps using 323i Canadian e90 LCI software on a 328i/ 128i n52
OR using N51 software on the N52 engined 328i/128i

OR using BMW z4 equivalent n52 software on 328i/128i

[GoRomeo]

Originally Posted by thakid22

Problem: I always thought part throttle response and shift points were wayyyy too conservative on the 330i. In regular D mode, the throttle and shift mapping are set for maximum fuel economy. DS mode is a touch too aggressive for leisurely everyday driving.

Solution: I have remedied this by flashing 325i transmission software on my 330i.
The 325i engine has less torque and less power, so BMW programmed its tranny software to downshift more readily and rev a bit higher before shifts. These differences are very subtle, but when applied to the more torquey and powerful 330i, it feels just right!

With 325i ZF software, the 330i feels more sprited, precise, and normal where shift logic is concerned. Stock 330i software is slow to downshift, often lugging a bit or requiring large throttle inputs to provoke a gearchange.

My 330i never experienced the throttle lag upon initial tip in that affect so many.
The throttle did at times feel soft, likely due to the being in a less than performance optimal gear. This sensation is now gone. In fact, with the 325i software the engine/transmissions response to the throttle now seems "normal", an upgrade from the dismal throttle/tranny mapping I've experienced in BMWs since the death of the mechanical throttlebodies.

Anyway, here are the details for anyone who may be interested.
The 2006 330i current ZF auto software is zb# was 7572901.

I Flashed to ZB # 7572903 which is the latest software for the 2006 325i.


There is also a zb# 7589227 which has better downshift rev match abilities (still not Infiniti level) but it is upshifts at 6500rpm, effectively reducing our N52 redline. I assume 7589227 is from an M54 5 series with the ZF, hence the low redline. But that's beside the point of this post. Just rambling.

Great news!! Thanks for sharing!! I should definitely try this. Did you do this yourself or took it to a shop??

[mike-y]

Originally Posted by andrey_gta

Excellent idea.

Do you think that this can be migrated to the other 328i/ 128i models??

doubtful, most 328i's use the GM transmission not the ZF. You will need to verify which one you have.


also wondering where the OP had this done. Also, is there any way to determine which software revision you currently have?

[andrey_gta]

I am asking about flashing 328i/128i/323i GM tranny sot between different specs.

ZF working ona 325i is a great start.

I have a manual my self, but I've seen the excitemnt about Alpina flashes for 335i so I hope we get this for those with auto..




EDIT:

What about using z4 software from the 2.5 3.0 or 3.0.si for the 325i or 330i. They all use same Transmission

[mike-y]

Originally Posted by andrey_gta

I am asking about flashing 328i/128i/323i GM tranny sot between different specs.

ZF working ona 325i is a great start.

I have a manual my self, but I've seen he excitemnt about Alpina flashes for 335i so I hope we get this for those with auto..

not sure I follow? you want to compare the different _28i/_23i softwares for cross flashing with other GM transmission cars?

the 330 and 325 both have a ZF trans and share the same TCU, so you may not be able to use the same software - unless the GM trans is also controlled by the same TCU

[andrey_gta]

Yes.
If the ZF can be re-flashed. Why not do the same with the later GM auto trannies using BMW spec software? The results should be simmilar

[thakid22]

Originally Posted by andrey_gta

Excellent idea.

Do you think that this can be migrated to the other 328i/ 128i models??
Perhaps using 323i Canadian e90 LCI software on a 328i/ 128i n52
OR using N51 software on the N52 engined 328i/128i

OR using BMW z4 equivalent n52 software on 328i/128i

Yes! This will definitely work on other models.
But, we'd have to figure out what zb #s are used by the less powerful variants of those engines.

The 328i models have GM transmissions. So you won't be able to use software from any ZF models. The question would be what is the least powerful BMW with the 6speed gm auto tranny... The heavier X3 and X5 might have a their own software as well, creating the same effect.

[thakid22]

Originally Posted by GoRomeo

Great news!! Thanks for sharing!! I should definitely try this. Did you do this yourself or took it to a shop??

I was able to do this at home via BMWTools.
INPA, WinKFP, Toolset32 and NCSExpert are
very power pieces of software.

No enthusiast should be without them. Even a casual user will benefit, from
the software suites diagnostic capabilities.

If you don't have it, definitely look into getting it! 👌

[thakid22]

Originally Posted by mike-y

doubtful, most 328i's use the GM transmission not the ZF. You will need to verify which one you have.


also wondering where the OP had this done. Also, is there any way to determine which software revision you currently have?

I did this in my driveway with INPA and WinKFP software.
All of the stock BMW software is available for download too.

INPA or WinKFP will tell you what software version (zb#) you have installed.

[thakid22]

Originally Posted by andrey_gta

I am asking about flashing 328i/128i/323i GM tranny sot between different specs.

ZF working ona 325i is a great start.

I have a manual my self, but I've seen the excitemnt about Alpina flashes for 335i so I hope we get this for those with auto..




EDIT:

What about using z4 software from the 2.5 3.0 or 3.0.si for the 325i or 330i. They all use same Transmission

I'd be interested in ZF Z4 software too. Oftentimes (on other car manufactures), sportier models get more aggressive software as well. I'll do a little digging around to see what I find regarding Z4.

[GoRomeo]

Originally Posted by thakid22

I was able to do this at home via BMWTools.
INPA, WinKFP, Toolset32 and NCSExpert are
very power pieces of software.

No enthusiast should be without them. Even a casual user will benefit, from
the software suites diagnostic capabilities.

If you don't have it, definitely look into getting it! ��

Ok thanks you should consider posting a DIY right guys??

[pfitz911]

Great. Thanks for this, but how do plebs like myself do this? I have an open flash tablet, does that help?

[AMG KLR]

Originally Posted by pfitz911

Great. Thanks for this, but how do plebs like myself do this? I have an open flash tablet, does that help?

No. If you have no coding experience in the past don't jump right in because you saw this post

[GoRomeo]

Originally Posted by AMG KLR

No. If you have no coding experience in the past don't jump right in because you saw this post

I agree.


Any local coders here in San Diego that could do this for me for a some cash and a six pack? PM me? Even though my car is performing good overall I will be interested in this flash..

[cuco]

nice info, my 328 always upshifts at 6500 rpms maybe 325s are the same.

[amarildo]

Originally Posted by thakid22

Problem: I always thought part throttle response and shift points were wayyyy too conservative on the 330i. In regular D mode, the throttle and shift mapping are set for maximum fuel economy. DS mode is a touch too aggressive for leisurely everyday driving.

Solution: I have remedied this by flashing 325i transmission software on my 330i.
The 325i engine has less torque and less power, so BMW programmed its tranny software to downshift more readily and rev a bit higher before shifts. These differences are very subtle, but when applied to the more torquey and powerful 330i, it feels just right!

With 325i ZF software, the 330i feels more sprited, precise, and normal where shift logic is concerned. Stock 330i software is slow to downshift, often lugging a bit or requiring large throttle inputs to provoke a gearchange.

My 330i never experienced the throttle lag upon initial tip in that affect so many.
The throttle did at times feel soft, likely due to the being in a less than performance optimal gear. This sensation is now gone. In fact, with the 325i software the engine/transmissions response to the throttle now seems "normal", an upgrade from the dismal throttle/tranny mapping I've experienced in BMWs since the death of the mechanical throttlebodies.

Anyway, here are the details for anyone who may be interested.
The 2006 330i current ZF auto software is zb# was 7572901.

I Flashed to ZB # 7572903 which is the latest software for the 2006 325i.


There is also a zb# 7589227 which has better downshift rev match abilities (still not Infiniti level) but it is upshifts at 6500rpm, effectively reducing our N52 redline. I assume 7589227 is from an M54 5 series with the ZF, hence the low redline. But that's beside the point of this post. Just rambling.

Thank you. Worked very well.

[thakid22]

Originally Posted by amarildo

Thank you. Worked very well.

Glad I could help. 😆

[bimmerquick43321]

Question is does it feel like it's shifting faster, that's in DS mode of course? I'm guessing no, but I try lol

[Eagle1oh7]

Us with the GM tranny needa software flash made.

[thakid22]

Originally Posted by mecbain

Question is does it feel like it's shifting faster, that's in DS mode of course? I'm guessing no, but I try lol

The shifts are not appreciably faster.
For that you would need to upgrade the mechatronic to a 03/07 unit and flash Alpina B3 software to the tranny.

[Mike.]

Originally Posted by Eagle1oh7

Us with the GM tranny needa software flash made.

I dont understand why a vendor has not done this yet