Ok fixing to get a Lbz reg. for my lly cp3. What am I going to have to change in my tunes? I don't have korys password so can't check that out. Heard it was only one graph to change?
Lbz regulator on lly tuning
- Thread starter quinton
- Start date
If its a stock regulator you aren't going to have to change anything as far as regulator current... I didn't on my LLY. You could go in and change the Fuel Pressure Base table and increase mPa up to 190 in the lower right portion
Ok. Mines already raised to 190 in the fuel pressure base. So will I be able to just install it and go? I thought there was something else you had to do? And yes it's stock lly cp3
Would this change be the same on a LB7 where a stock but new LBZ reg was installed on a stock LB7 pump?
My rail pressure is a steady 23k with it set at 190, so I'm assuming I can throw the Lbz reg in there and then it will be 28k right? Lb7 should be the same.
That tune must have a pretty low commanding uS... On a 3300 uS tune my truck with an LBZ regulator would hit 25k but held pretty strong at 22000.
Make sure and reascale your rail pressure sensor table before you go commanding more than 180 for rail pressure. As for the currentt table some need changing, and some don't. From what I have read pretty much all LB7's need adjusting, but LLY's seem to be able to adjust better to it. You can always log desired VS actual rail valve current and rescale it to make it exact.
This is what I was thinking you would have to do. Doesn't kory have the "how to" on rescaling it from Lbz to lb7 or lly?
I thought regulator voltage was B1010.
IIRC, the LBZ table has a different scaling than the LB7/LLY tables, too. Its not simply cut-n-paste (which would've helped immensely with the swap).
Theres actually quite a few tables to change if you want to go over 160 for rail pressure. Don't forget about the 2 that are for diagnostics that will limit it to 167 despite putting 200 in. And B1010 should be changed(and is a must for LB7's) to match the scaling of an LBZ's regulator current table. You have the max rail pressure VS fuel temp, the actual desired rail pressure table, and teh 2 pressure diagnostic limiters to do(those 2 took me awhile to find as I chased it for awhile trying to break 167). And since it's an LLY, don't forget to shim your popoff or else you will have a real problem on your hands once it breaks about 170.
If you want to run more than 160 then there are quite a few tables that need changed, as well as shimming your rail valve. If your staying at 160 for rail pressure, then there is only the B1010 table that needs to be rescaled.
