Rail pressure 35d m57

[Lucy_Wilson2002]

Greetings,

2010 635d M57D30TÜ with upgraded ECU to Stage 1, xHP to Stage 2, with DPF and EGR systems deactivated.

I am seeking guidance to navigate in the correct route. The vehicle consistently enters LIMP mode whenever I attempt to accelerate more aggressively. I began seeing this issue when we performed a customised remapping a long time ago, but it used to occur extremely seldom. Now, every time I hit the pedal.

My lack of understanding may hinder my ability to make an accurate judgement, but it seems like there is an issue with the rail pressure. I marked the area where I experienced Limp mode.

Currently, I have implemented R70 and I believe that may be the final version. Considering purchasing R90, seeking advice from more experienced individuals on the community.

Thank you!

[Lucy_Wilson2002]

Added more logs using the ProTool. A limp mode was triggered during the transition from 2nd to 3rd gear. The rail pressure fell while the pump was under load.

[godisgreat]

Begin by installing a new fuel filter.

Verify the functionality of the in-tank pump.

[almamater78]

Experienced a similar problem with the engine going into limp mode at about 130 mph due to an excessive amount of fuel being delivered by the remap. After getting a fresh remap, the issue was likely resolved. Initially suspected issues with converters or the boost sensor, but then realised the remap was the cause.

[godisgreat]

The speed is 130 miles per hour. You deserve it.

[almamater78]

My highest speed was 154 mph.
Returning from a vacation to Leeds many years ago.

[godisgreat]

That is nothing. I drove at a speed of 100 miles per hour in a Nissan Leaf E+ with 215 horsepower on the A69 road.

The acceleration was rapid, reaching the limit of 10,000rpm which corresponds to a speed of 100mph.

[Lucy_Wilson2002]

thanks guy