peer review request (speed density P59)

[AngelMarc]

CB450(9-8-2024)ForBroke.bin

Been wanting some input.
Not having a vehicle to test on, and not knowing how to get good logging, limits how much I can verify.
It acts like speed density, but isn't actually custom code.
It's a very butchered "tune".
If I'm right, you can do a bunch of AB comparison and figure it out, then nobody needs HPTuners for that, even people that have emissions concerns.
I'm sure I have a couple hundred hours into reading, changing, and testing.

And maybe somebody will know why it won't get out of the closed throttle spark table.
https://youtu.be/g_Q6pFgmySY?si=8hXZEqtp5v18lpN-&t=24

For anybody new looking into this https://universalpatcher.net/download/
Free software, requires a J2534 or a few other cheaper option dongles.

[Knackersjewels]

What sensors do you have installed? Looks like maf deleted, but the VE table isn't tuned at all. Do you have MAP and TPS?

[dubcrazy8392]

There isnt much custom coding that needs done to have speed density honestly. all of the logic behind a decent speed density system is in the P59 but the problem i seen how most apply it is more of a hack that sort of cripples the ECU more than it helps it. The guy who did boost OS was on the right path with making P59 more of a genuine SD system. if your running 12587603 OS i could probably give you a patch that would basically give you proper SD function out of the ECU. none of that hacky disable fault codes stuff and force it into limp mode. also you could patch table axis's that use grams per cylinder or whatever and make those axis's MAP instead. grams per cylinder is pretty pointless with SD since its more of an air flow calculation and with SD your using an air pressure calculation instead so it only seems fitting to fix the axis's.

[AngelMarc]

What sensors do you have installed? Looks like maf deleted, but the VE table isn't tuned at all. Do you have MAP and TPS?

All I used was crank, MAP, and IAT. Literally everything else was disconnected. There's a value for what counts as open throttle, I tried setting that to zero, and the TPS default higher than zero, still didn't leave closed throttle table.
The "tune" was just some numbers that got it to run, then I changed the entire table to see the exhaust flames change from orange to blue. Beyond that, I did some scanner live data to verify timing was doing what I set and there weren't any modifier tables left changing it.

[AngelMarc]

There isnt much custom coding that needs done to have speed density honestly. all of the logic behind a decent speed density system is in the P59 but the problem i seen how most apply it is more of a hack that sort of cripples the ECU more than it helps it. The guy who did boost OS was on the right path with making P59 more of a genuine SD system. if your running 12587603 OS i could probably give you a patch that would basically give you proper SD function out of the ECU. none of that hacky disable fault codes stuff and force it into limp mode. also you could patch table axis's that use grams per cylinder or whatever and make those axis's MAP instead. grams per cylinder is pretty pointless with SD since its more of an air flow calculation and with SD your using an air pressure calculation instead so it only seems fitting to fix the axis's.

I don't know when I'd actually make time to try it, but I'd like to try the available speed density patches. Finding out all I want to find out, sucks up a lot of time. There's a certain simplicity I'm aiming for, and if they don't meat it, I'm moving on.
Have you seen my scratch built 24x ECU code? There's not much I want to add to it. I want to port that to a sock ECU; currently looking at the Chrysler NGC4 for that.

[dubcrazy8392]

There isnt much custom coding that needs done to have speed density honestly. all of the logic behind a decent speed density system is in the P59 but the problem i seen how most apply it is more of a hack that sort of cripples the ECU more than it helps it. The guy who did boost OS was on the right path with making P59 more of a genuine SD system. if your running 12587603 OS i could probably give you a patch that would basically give you proper SD function out of the ECU. none of that hacky disable fault codes stuff and force it into limp mode. also you could patch table axis's that use grams per cylinder or whatever and make those axis's MAP instead. grams per cylinder is pretty pointless with SD since its more of an air flow calculation and with SD your using an air pressure calculation instead so it only seems fitting to fix the axis's.

I don't know when I'd actually make time to try it, but I'd like to try the available speed density patches. Finding out all I want to find out, sucks up a lot of time. There's a certain simplicity I'm aiming for, and if they don't meat it, I'm moving on.
Have you seen my scratch built 24x ECU code? There's not much I want to add to it. I want to port that to a sock ECU; currently looking at the Chrysler NGC4 for that.

one thing i was thinking about was adding 58x crank trigger support to the the P59 honestly. would be nice for he P59 to be plug and play friendly with a GEN4 LS engine. gets old having to swap cranks or the trigger wheels in a GEN4 LS to use my P59 ECU.

[AngelMarc]

one thing i was thinking about was adding 58x crank trigger support to the the P59 honestly. would be nice for he P59 to be plug and play friendly with a GEN4 LS engine. gets old having to swap cranks or the trigger wheels in a GEN4 LS to use my P59 ECU.

Somewhere here is a post of a partial datasheet for the Delco CIC that shows how impractical that is. Just get/make a crank pulley mounted trigger wheel.

[antus]

yeah I think the crank trigger is in hardware, and cant be changed. you could consider making some kind of hardware solution that sits inline and converts one signal type to the other, that'd be the best bet.

[Tre-Cool]

yeah I think the crank trigger is in hardware, and cant be changed. you could consider making some kind of hardware solution that sits inline and converts one signal type to the other, that'd be the best bet.

Thats what the lingenfelter unit does. takes the 58 & 4x sensors and feeds it to the stock P59.

first generation were shit as once they got hot you'd be driving along and all of sudden engine stops. Been there before. pour some water on it and car starts straight up.

They fixed it eventually with some new hardware.

[Phoenix]

one thing i was thinking about was adding 58x crank trigger support to the the P59 honestly. would be nice for he P59 to be plug and play friendly with a GEN4 LS engine. gets old having to swap cranks or the trigger wheels in a GEN4 LS to use my P59 ECU.

Sign me up for that!