High fuel pressure desired issues

[cesar]

Has anyone encountered an issue where the High fuel pressure solely follows the .08 g/cyl row on the high pressure desired table? I can't figure it out.

GPI Cam, fbo, lash cap on the high pressure pump, e85


weir dissue.PNG

so the log called weird ass issue has the stock .08 row , the 466rwhp one has the modified .08 row. I am using the 1.00 g/cyl row and pasting it at .08 to get my desired fuel pressure up.

doesnt have any dtcs. I didnt do the work on the engine. Not sure if messing up the lash cap, or anything there can cause a high pressure default to .08 g/cyl desired fuel pressure?

[cesar]

Anyone?

[cesar]

bump

[sevinn]

Did you happen to change the row axis on the hpfp table?

[A_Texas90]

Did you happen to change the row axis on the hpfp table?

Is this how you account for the increase fuel lobe still can?t find solid answer?

[sevinn]

Is this how you account for the increase fuel lobe still can?t find solid answer?

No that would be the leading edge table. You multiply the row axis by the % increase from fuel lobe on that one. On some OS if you change the hpfp desired axis it will reference either the very top or the very bottom row all the time.

[cesar]

No, stock axes. Even compared with another stock 6th gen.

[sevinn]

Did you change the hpfp noise control to enable (pump pulse)? I compared to a stock 2018 file I have and it's usually set to disable from what I can tell. Worth checking out.

[Lakegoat]

Both of his pump noise tabs are enabled. Are they supposed to be?

[Lakegoat]

Under Fuel Pressure, High flow upper and lower have numbers that stop at 3600rpm----Anybody know how. Same as my '14 Silverado. At WOT the fuel pressure is all over the place. ZL1 in tank, 30% fuel lobe, 9# boost, 408ci.