pcmhacking.net

Count me among the folks that are very excited about this project. At the moment, I'm running a
Pontiac 455 and a 4L80E using a 12200411 PCM and OS 12212156. The 455 has been fitted with
a 24x crank setup on the balancer and a 1x stub-shaft where the HEI once lived. I'm using code
from a 2002 2WD van w/ a LQ4, 4L80E and DBC as the basis of this setup. Its been running this way
for a few years now, and I'm very happy with the results.

I'll be adding a supercharger to the setup this spring, and see this as a nice opportunity to migrate
to a P59 PCM. I've got a stack of them in the garage, including a few of the 12586243's that are
needed to maintain my DBC setup. Seems like a great time to migrate to OS 12587603.

Great seeing support for the factory PCMs - I'm a fan of OEM engineering and reliability. Thanks to
bubba and everyone else involved in this project.

-Scott

Hiya Bubba,
A bud of mine just bought a TT kit for his 65 Impala LS swap. I will start with the p01 DBC and see how it goes. I'm pretty excited to try your stuff, it will be a few months before everything is ready to play

In-Tech wrote:Hiya Bubba,
A bud of mine just bought a TT kit for his 65 Impala LS swap. I will start with the p01 DBC and see how it goes. I'm pretty excited to try your stuff, it will be a few months before everything is ready to play

Why P01 and not P59 ??

More room to grow with a P59.

Hiya Gampy,
I will probably end up there. I'd like to start at the beginning and grow from there, he's already p01 and I know it's not a difficult upgrade and I have plenty of p59's. It's just me learning as I go

Ah ha, gotcha, thee ol'One foot in front of the other technique ... Sounds reasonable to me.

-Enjoy

Took a lot longer than expected to try this out, but it works just as expected! I cant test this ffs as I have an auto though. Awesome job bubba!! Can't wait to see what you're cooking up next

bubba2533 do you think this will work on the 7603 V6 OS?
What do I need to get a copy of the current version?

NSFW wrote: The PCM Logger app does 12 bytes at 10hz right now, so I'm curious as to how EFI Live is getting 24. I'm told there's a way to get the PCM to send data without requesting each new row of data, and I've experimented with it a little bit, but I haven't figured out how to make that work yet. Right now the app send a request, the PCM responds with a row, and that cycle repeats. If the app could send a "start streaming" request and just read row after row of data, I'm sure that would speed things up.

Send and the PCM will send back 24 replies for dpids FE, FD and FC.

Still tuning my truck, but so far running very well. Haven't really pushed it yet bc I'm nervous of the boost spark. I live at high elevation, baro kPa of 79 at key on. I know of the offsets to account for this, but just want some reassurance. Will it look at anything over my key on baro as boost? Can I just fill in the boost spark table to account for everything over key on baro, or do I need to take it into account in the main spark tables for between 80-105 kPa?

The boost spark table is MAP and not boost pressure.

So you’ll need to account for it in the main table. Although that is a very small amount of boost so I don’t really think it would matter. You might have to worry about it if you go to sea level.