Electronic Fuel Injection - Developement & Tuning
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Nice work!gmtech825 wrote:Success! finally had more time to mess with this and was able to change the RVS timer. The ECM limits it to 21 minutes but I'm happy with that. It did end being a bit of a guessing game after I narrowed it down to a few possibilities, but still only took a couple of tries to get it. I learned a whole lot in the process though so I'm happy.
but 21 minutes is adequate for me. There are other things I might look into next. it looks like rear flashing lights can be enabled somehow, so that would be great for this truck since I plow with it. Time to fall down another rabbit hole 
I guess adding 6minutes more is better then nothing! I mean the theoretical maximum in the BCM is way higher. I havent actually looked at the ECM figures to know what it can go up to.gmtech825 wrote:possibly
Code: Select all
if (*(char *)(in_r13 + -0x3172) == '\0') {
if (DAT_001c09fa < *(ushort *)(in_r13 + 0x48a4)) {
*(undefined *)(in_r13 + 0x48a3) = 1;
*(undefined *)(in_r13 + 0x48a2) = 1;
FUN_00151888(0);
FUN_00151600(4);
}
else if (*(short *)(in_r13 + -0x7468) == 0) {
if (((*(short *)(in_r13 + -0x19fe) == 8) && (*(char *)(in_r13 + -0x19fc) != '\0')) ||
(*(char *)(in_r13 + -0x3116) != '\x01')) {
if (DAT_001c09fe < *(ushort *)(in_r13 + 0x48ac)) {
*(undefined *)(in_r13 + 0x48a3) = 1;
*(undefined *)(in_r13 + 0x48a2) = 1;
FUN_00151888(0);
FUN_00151600(10);
}
else if (*(short *)(in_r13 + 0x48ae) == 0) {
*(undefined *)(in_r13 + 0x48a3) = 1;
*(undefined *)(in_r13 + 0x48a2) = 1;
FUN_00151888(0);
FUN_00151600(7);
}
else if ((*(short *)(&DAT_00002cc4 + in_r13) == 2) || ((&DAT_00002cc6)[in_r13] == '\0')) {
*(undefined *)(in_r13 + 0x48a3) = 1;
*(undefined *)(in_r13 + 0x48a2) = 1;
FUN_00151888(0);
FUN_00151600(0xc);
}
else if ((DAT_001c09f4 < *(ushort *)(in_r13 + 0x48a6)) ||
(DAT_001c09f6 < *(ushort *)(in_r13 + 0x48a8))) {
*(undefined *)(in_r13 + 0x48a3) = 1;
FUN_00151600(1);
}
else if (DAT_001c09f8 < *(ushort *)(in_r13 + 0x48aa)) {
*(undefined *)(in_r13 + 0x48a3) = 1;
FUN_00151600(8);
}
else if (((*(char *)(in_r13 + 0x4710) == '\0') || (*(char *)(in_r13 + 0x48b5) == '\0')) | |
(*(short *)(in_r13 + -0x311a) < 0x800)) {
*(undefined *)(in_r13 + 0x48a3) = 1;
}
}
else {
*(undefined *)(in_r13 + 0x48a3) = 1;
*(undefined *)(in_r13 + 0x48a2) = 1;
FUN_00151888(0);
FUN_00151600(9);
}
}
else {
*(undefined *)(in_r13 + 0x48a3) = 1;
*(undefined *)(in_r13 + 0x48a2) = 1;
FUN_00151888(0);
FUN_00151600(6);
}
}
else {
*(undefined *)(in_r13 + 0x48a3) = 1;
*(undefined *)(in_r13 + 0x48a2) = 1;
FUN_00151888(0);
FUN_00151600(2);
}
return;Oh sorry, I was thinking of the recent late model BCMs, they came out with 15min timers after everyone complained about it being only 10min.gmtech825 wrote:this timer was actually set to 10 minutes stock, so I gained 11 minutes. It's looking like the restart limit may be a function of the ECM as well, but that contradicts one document I've read that states the limit is set by the Platform and not the powertrain.
Do you have any advice on decompiling the E38 ECM with ghidra. I selected powper pc with VLE for the processor type, but a lot of the code is showing R13 + some other value.
, mind sharing. I am trying to help some brits add remote start, they can get it activated but immediately shuts off, just wanna make sure the timer is is set to something more than 3 seconds.You mean it actually starts for a second and then turns off? or just the parking lights flash??Vampyre wrote:Ii see you had success but no mention of where you found it
all the parameters were in the system segments. keep in ind the ecm software has to have the rvs enabled as well...but all the ecms i've seen have had it enabled even if the truck didn't come with it to begin with. I'm willing to help out but I would need the flash I think.Vampyre wrote:Ii see you had success but no mention of where you found it