N55 135 Losing Rail Pressure 35-4700rpm

Jroms135

New Member
Jun 25, 2019
8
0
0
Ride
2011 BMW E82 135i
I have a 135. Fbo+ blah blah. I have been running a custom E50 wedge MHD tune for 5-6 months with no issues. I went to the track 2 weeks ago and was loosing rail pressure between 3500-4700rpm(also 17-18psi) when I go WOT. If I feather through that rpm range I can then go WOT and have full rail pressure 2500psi+. Any help would be greatly appreciated. I know a log could probably help. I’ll see what I can do about getting one tonight.
 

Weehe

Specialist
May 21, 2019
85
39
0
Ride
2011 335i
Yeah, can't really help without the log. I'm still guessing over boost running out of fuel.
 
  • Like
Reactions: Bnks334

doublespaces

Administrator
Oct 18, 2016
9,303
4,331
0
AZ
Ride
2009 E93 335i
I have a 135. Fbo+ blah blah. I have been running a custom E50 wedge MHD tune for 5-6 months with no issues. I went to the track 2 weeks ago and was loosing rail pressure between 3500-4700rpm(also 17-18psi) when I go WOT. If I feather through that rpm range I can then go WOT and have full rail pressure 2500psi+. Any help would be greatly appreciated. I know a log could probably help. I’ll see what I can do about getting one tonight.

Can you go to https://datalogs.spoolstreet.com and upload the log there. Then copy the BB code and post it as a reply in this thread so people can easily review it.



I don't mean to hijack the thread but im having the same exact issues

Would recommend making a new thread or watching along on this one.