what is normal working range of lpfp

[kakluote]

what is normal working range of lpfp ?

the logs is showing lpfp is working between 3 to 4 bar during

full pull(4000 to 7000RPM),

sometimes it is low to 2.8bar at 7000RPMs

does this mean the lpfp is about to die?

thanks

 

[Ed @ EQT]

what is normal working range of lpfp ?



the logs is showing lpfp is working between 3 to 4 bar during



full pull(4000 to 7000RPM),



sometimes it is low to 2.8bar at 7000RPMs



does this mean the lpfp is about to die?



thanks

It means you’re out flowing the lpfp.

 

[kakluote]

It means you’re out flowing the lpfp.

my hpfp is setting to 230bar, too high?

 

[SmokinCAT]

It means you’re out flowing the lpfp.

Can this be fixed with a control module upgrade, or would it take a full swap to something like an RS3 pump to remedy this?

 

[Gvazquez]

Can this be fixed with a control module upgrade, or would it take a full swap to something like an RS3 pump to remedy this?

Depends on your setup but I'm using a walbro 450 pump and torquebyte pm4 controller

 

[littco]

my hpfp is setting to 230bar, too high?

Too high? If you are not sure if it's too high or not then I would suggest you are not asking the right question.

The pressure should be set to achieve the desired injector MS which is also related to the Injection window. Being too high can cause as many issues as being too low in some cases.

Lpfp is about volume of fuel not strictly pressure but ideally you should see a constant 5bar for optimal feed to the hpfp

 

[SmokinCAT]

Depends on your setup but I'm using a walbro 450 pump and torquebyte pm4 controller

Currently showing LPFP running at 85% duty cycle on a hard pull.

 

[Diggs24]

Currently showing LPFP running at 85% duty cycle on a hard pull.

What lpfp? What turbo? What tune? Need more info. The OP needs a bigger lpfp. What is your current issue?

 

[Hoon]

Currently showing LPFP running at 85% duty cycle on a hard pull.

That is commanded and is in no way indicative of load.

 

[SmokinCAT]

That is commanded and is in no way indicative of load.

Are there any parameters that can be monitored that would let me learn how the fuel system is doing?

Would rather learn where I am at, than to just be told what is needed.

 

[Diggs24]

Are there any parameters that can be monitored that would let me learn how the fuel system is doing?

Would rather learn where I am at, than to just be told what is needed.

fuel pressure

 

[SmokinCAT]

fuel pressure

Had to update my AP before it would give me that parameter.

Don’t know if it is giving a false reading or not as it never changes, but shows 159psi and it never fluctuates.

 

[Diggs24]

Doesn't compute. Please post logs to datazap.

 

[Hoon]

There is no low side sensor until MPI is added.

 

[c4ypt1k]

Too high? If you are not sure if it's too high or not then I would suggest you are not asking the right question.

The pressure should be set to achieve the desired injector MS which is also related to the Injection window. Being too high can cause as many issues as being too low in some cases.

Lpfp is about volume of fuel not strictly pressure but ideally you should see a constant 5bar for optimal feed to the hpfp

Mind showing a log that show constant 5bar to the HPFP?

mine is dropping to 3bar and 3.5bar at 7000rpm 4th pull tested using 305lph and 450lph respectively on OEM controller

running E10 fuel @28psi


logviewer below is with 450lph pump