Reply With QuoteI have heard of this upgrade. Is it for the 95 525i as well? How expensive and how difficult to install?
Thanks
Originally Posted by Messerschmitt
Transmission EPROM installed today...
Just for kicks, I ordered the upgraded EPROM for my 530ia tranny and installed it today.
I'll have to say that it did make a worthwhile difference. It was supposed to eliminate the 4th/5th gear pendelum shifting and go back into high gear faster after a kickdown downshift. So far it seems better. I'll post later after some time in the drivers seat.
Messerschmitt
2 Grand Master
Please tell me more
I have heard of this upgrade. Is it for the 95 525i as well? How expensive and how difficult to install?
Thanks
Thanks,
1995 525i Auto, M50TU 2.5L, EAT chip, 1/95 build, USA, 205/65/15 tires, ASC+T, HID, lumbar, EC Mirror, BMW Alpine 5 radio with BMW-Pioneer CD Changer, abt 236k miles, Oxford Green/Parchment
I don't know if it's available for all trannys but that would make sense...
The part number for the new EPROM for the ZF-5HP18 is 01 00 1 469 310
It was introduced to cure several "customer complaints" at once.
I'll see what I can find out about your transmission
Messerschmitt
Major Contributor
My '93 525ia w/GM trans had an eeprom update....
...I was getting trans prog error messages... code said it was a bad fluid pressure regulator. Replaced that ($90 part) and a bulletin said there was an associated EEPROM update (another $90) (perhaps changing valid fluid pressure values); no problems since.... about 8 months and 4K miles., Rob.
Ninety bucks!!!
The EPROM cost ~20.00 and it only takes maybe 20 minutes to replace. It's inside of the transmission control module in it's socket with a plastic cover. Really easy to replace. However, you will need the correct part number
Messerschmitt
Was that $20.00 from a stealer?
Does this chip work on the 540 5 speed auto tranny also?
1995 540iA - 1988 535i 5 Speed
1980 528i 5 Speed - 1980 528iA (Sold)
2 Grand Master
Thanks - sure would like to know
Thanks,
1995 525i Auto, M50TU 2.5L, EAT chip, 1/95 build, USA, 205/65/15 tires, ASC+T, HID, lumbar, EC Mirror, BMW Alpine 5 radio with BMW-Pioneer CD Changer, abt 236k miles, Oxford Green/Parchment
Major Contributor
now I feel great.... $90 for a $20 update... stealer in Honolulu.
$20.00 from BMA ...
TIS only lists 530ia and touring for this upgrade. If you have a 530i I really think it is worthwhile.
Messerschmitt
Bob, when you shift to 4th gear from (ED) in your 540 does it jerk really hard? My 94 540iA does.
94 540i- 2.50 HP Racing exhaust, 2 3/4 lowered,18.8 HP Evo's,
88 325ic- AC Schnitzer chip,3' lowered ,M3 body kit, 17.7 TSW Ribs
Michael A. Johnson
Mighty Mike's Sound & X-cessories
MRBMW1
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