Hello.
I just purchased and installed the Hondata HPFP in my Honda Civic CTR 2015 FK2.
It seems that there is now a massive loss of pressure at high revs.
As you can see from the logs, the duty cycle is lower now (as expected). But the difference between DIFPcmd and DIFP is quite large now compared to before.
Hope it just needs some setting.
I am attaching the 2 calibration files (before and after installation). And 2 log files (before and after)
I hope you can help me in the right direction.
Hondata FK2 Fuel system
Hondata FK2 Fuel system
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Re: Hondata FK2 Fuel system
Pull the low pressure line off the fuel pump and check the screen on the HPFP inlet for any debris. Also you can unplug the HPFP connector and then see what fuel pressure is with only the in tank pump (you will get an error). It should be around 6 bar.
Hondata
Re: Hondata FK2 Fuel system
Well... Now i am getting closer.
My fault for not installing the hondata high pressure fuel line in the first place. Did nor realize the importens of that part. And on the FK2 its a troublesome job.
Anyway... Thats done and the DIFP is way better. Still missing 10-13 bar at high rpm compared to stock fuel system at same boost and ign.
Is there any fuel pump tables that will have any effect on this?
My fault for not installing the hondata high pressure fuel line in the first place. Did nor realize the importens of that part. And on the FK2 its a troublesome job.
Anyway... Thats done and the DIFP is way better. Still missing 10-13 bar at high rpm compared to stock fuel system at same boost and ign.
Is there any fuel pump tables that will have any effect on this?
Re: Hondata FK2 Fuel system
How much fuel pressure? I suggest limiting the fuel pressure to 180 bar to get more volume.
Hondata
Re: Hondata FK2 Fuel system
I have as low as 188 difp bar top end.
It's just that with stock fuel setup, there is no problem delivering difp 200 and as high as 207 bar top end. With same power demand.
So why is my new 2000 dollar pump struggling?
Lowering the fuel pressure. Won't that make the injektion time longer?
I was looking for some kind of setting, that will make the hpfp work harder (raise the duty).
It's just that with stock fuel setup, there is no problem delivering difp 200 and as high as 207 bar top end. With same power demand.
So why is my new 2000 dollar pump struggling?
Lowering the fuel pressure. Won't that make the injektion time longer?
I was looking for some kind of setting, that will make the hpfp work harder (raise the duty).
Re: Hondata FK2 Fuel system
Did you check the HPFP inlet for debris? Can you measure the inlet pressure?
Hondata
Re: Hondata FK2 Fuel system
Yes i did.
Inlet pressure is 6 bar, and i dont spot any debris anywhere.
I tried to raise the fuel pressure from 200 to 208 bar at 6000 rpm. Now the pressure in the fuelrail has come up accordingly. So it seems that the fuel system has no problem delivering. but for some reson not getting the correct info.
Inlet pressure is 6 bar, and i dont spot any debris anywhere.
I tried to raise the fuel pressure from 200 to 208 bar at 6000 rpm. Now the pressure in the fuelrail has come up accordingly. So it seems that the fuel system has no problem delivering. but for some reson not getting the correct info.