n54 fuel drop

[N54 Killer]

Hello guys,

I have e89 n54 top mount, I have a fuel drop and big STFT numbers,

LPFP Walbro 525LPH
HPFP Stock

Stock ign numbers, gaspump

datazap.me | N54Killer | Log 1752356785

datazap.me

thanks

 

[oVeRdOsE]

the e89 dont have a lpfp pressure sensor iirc, you dont have any log on it. hard to tell if the hpfp is the issue or the lpfp.

you have a major hpfp drop.

in my case the lpfp was the issue .

however, I was pushing 480whp on a xi with 750 psi on the hpfp, and you're at 950 psi.
safe limit is around 1200psi.

I drilled the fuel rail few weeks ago and redo the line on the venturi valve and now holding 1200psi at wot.