EAT Chip for my 91 525i m20 question

[1991 525i Novs]

Hey guys -

kinda new here and I have found alot of information on the EAT chip but not for the m20 engine. I have 154,000 miles on it and have maintained the engine great and it runs like its brand new, should i get the chip and if so should i increase the rev limit. Its an automatic also, any input would be great,thanks guys

[MarkD]

Hey guys -

kinda new here and I have found alot of information on the EAT chip but not for the m20 engine. I have 154,000 miles on it and have maintained the engine great and it runs like its brand new, should i get the chip and if so should i increase the rev limit. Its an automatic also, any input would be great,thanks guys

If you have the auto, I don't recommend the increased rev limiter.

Have a look at this thread for feedback on the M20 chip. (there are 4 versions, depending on the octane (91 or 93, and stock injectors or 17/19#)

I also have a version for stock injectors, 91 octane and an auto transmission. (The E30 needs a different chip if you have an auto)

MarkD

[1991 525i Novs]

As far as I Know I have stock injectors, and im in the US mostly Michigan and Chicago area so I believe octane would be 91. I was told that I have the m20, my car has a build date of 11/90, and I checked the dme number on the computer which i was told to do and it was 0 261 200 405. Just let me know which chip i need, I dont plan on doing any further mods to the car. Is it even worth doing then? thanks for getting back to me so fast

[MarkD]

As far as I Know I have stock injectors, and im in the US mostly Michigan and Chicago area so I believe octane would be 91. I was told that I have the m20, my car has a build date of 11/90, and I checked the dme number on the computer which i was told to do and it was 0 261 200 405. Just let me know which chip i need, thanks for getting back to me so fast

Your DME indicates you have an early M50.

You can order that chip directly from my website.

MarkD

[1991 525i Novs]

Thanks, I prolly sound really new so i apoligize for that, also do u provide any intructions to install the chip, thanks

[MarkD]

Thanks, I prolly sound really new so i apoligize for that, also do u provide any intructions to install the chip, thanks

These instructions are all you need: http://www.bmwe34.net/e34main/upgrade/chip.htm


Mark