B1010 rail press valve current

[sweetdiesel]

anyone ever change this?
my thought was if we are commanding more fuel would we not want to raise this?
i looked at other tunes and havnt seen anyone change this

 

[McRat]

Rail pressure Current is the "guess" it takes at opening up the CP3 to get a desired pressure pressure. Lower # = More Fuel.

I did some testing, and the customer "said" it felt faster, but the data showed no change. I should play with it again sometime.

 

[sweetdiesel]

how low 0? maybee 600?
how low did you go

 

[sweetdiesel]

well guys
i just tried a few things
1 i lowered the table -15% except for 0 mm3 i left stock and 60000mm3 i set to zero ( stock 04.5 lly is zero @ 60000) then flashed and took it for a test drive..............not good for idle ...bad idea
2 stoped truck changed 1000-2000-3000 back to stock then lowered 3000 -5% leaving the others @-15% and 60000 at 0
i did not log this because i left my laptop power cable at work and wanted to keep as much battery power for flashing
i did not notice any increase in power or milege did however see a little more smoke i think and truck sounded a little bit louder rattly
could just be the miserable rainy day here but im thinking i might try going -30
% on the truck and see what its like hard to tell really but i dont think this is helping anything

 

[sweetdiesel]

well i have once again changed these settings
back to stock then from 28000 down to 60000 i went -25%
i also changed the 60000 to 0
i really dont think changing these upper 0mm3 to 20000mm3 helped if anything it was worse
the new settings seem to blow more black smoke so im going to keep playing around

 

[SBCNX20]

Im wondering what is being changed by adjusting this sensor?

 

[SIKDMAX]

Pat says this is how you can get rid of rattle and hunting idle/surge on modified cp3




....note for myself

 

[2500HeavyDuty]

surge and hunting can happen at different parts, accelerating, idling, cruisng and so on

what part are you talkin about

 

[SIKDMAX]

I believe he said idle.... this part kind of made my head hurt, he can verify tonight.

 

[2500HeavyDuty]

i have used b1010 to fix high rp and lope at idle

larry told me about it

 

[Stingpuller]

Values

I change the last to cells to 0. Then go up a couple and smooth them out. Jeff

 

[fast03]

yes raise the first ones a little then smooth the curve and bring the last ones to 0. It helps the hunting as you come off throttle back to idle. Pat used it on my truck then I have put it in all my tunes now. I think LB7's are more likely to have this problem related to what the cp3 is seeing incoming say from a lift pump.

 

[2500HeavyDuty]

dropping the last two or 3 cells to 0 will just let the fpr flow all out and let as much fuel flow as possible under WOT on the top end

 

[sweetdiesel]

Im wondering what is being changed by adjusting this sensor?

This table is the required milliamps to open/close the regulator on the cp3 Also why it sometimes used to tune for modded regulators and cp3s

 

[MMLMM]

On LB7 I start lowering at 20000 and then zero out 52000 and 60000...

 

[bullfrogjohnson]

On LB7 I start lowering at 20000 and then zero out 52000 and 60000...

I am doing this right now and will get back to see if it runs better

 

[LarryJewell]

I am doing this right now and will get back to see if it runs better

what did you end up doing, how did it run

 

[Cougar281]

FWIW (Not much, I know ), I have had nothing but frustration trying to figure that table out with the WD Modded regulator I put in. It's not doing what I'd expect (Raising current should decrease fuel flow), and when I get it doing something (for example, idling smooth with steady rail pressure and valve current close to desired), when I change it to try to fine tune it, find that doesn't work, and put it back to the one that was close, I get different results (rail pressure spiking to 9000# high and getting steady there).

 

[DIESELMAFIAPER.LB7]

So digging up a old thread I now have a II cp3 with there modded reg an have just started playing with it rail is a little high at idle at first now I got that smoothed. does anyone have a table that worked well for them?