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View Full Version : BMW 123d Rail Pressure Limiters



danyman80
2nd March, 2016, 11:27 PM
Hello friends. Can anybody help me with rail pressure limiters? I found many already but not enough, can not pass over 2030-2040 bar...The car is extremely tuned around 340hp - custom fuel pump etc and this is the final modification possible in this configuration...Here is original.
I found already :
74F68 -16x16
75168 -16x16
75562,7589A - 16x16
75F6C
75F7A - 2x2
75FB8 - 6x5
742E6
74B28 - 16x16
5AAE0

Morette
3rd March, 2016, 12:59 AM
many more limiters and maps, and change your message font color and size!

744B0, 7463C, 7471A for example, look around that area for others

76A58 5X1

5AAE0 isn't rail pressure.

danyman80
3rd March, 2016, 10:00 PM
Thanks I would give a try... Are they in some other parts more single value limiters? Majority of maps I found with Damos, but single limiters are hard to find , same as torque which I found all including torque monitoring limitations , without cancel any DTC...

danyman80
3rd March, 2016, 10:01 PM
There is one 8 bit limit of 255x8= 2040 bar??? If so, it seems impossible to get past that value...

Morette
3rd March, 2016, 10:16 PM
Compare with a 120d. This has 200 bar lower rail pressure at 1800 (18000 dec.)

Look for all of the bytes that are 2000 dec. higher, and you have found your rail pressure!