2003-2005 Cummins tuning

[chevycummins1]

Was wondering if efi live is capable of 2003-2005 Cummins tuning yet?? Or is it still in beta testing??

[2007 5.9]

Nope, not happening

[chevycummins1]

Why not happening??

[2007 5.9]

Efi has chosen to not support the 03-05 trucks. Focus is now on the 4th gens.

There are multiple posts stating this on this forum.

[chevycummins1]

That's a bunch of b.s. for 2 years they said they were working on it, Cindy from efi live even said that. There are so many truck owners out there that want it.

[2007 5.9]

They never said they were supporting them...Cindy said that it was on the development table and that they were looking at supporting them, but it was never promised.

[2007 5.9]

Belive me I know it sucks...I have many many friends with 03-05 trucks that are now stuck with udc tuning,

[chevycummins1]

I guess efi live isnt as great as everybody thinks. Its amazing that they can seem to keep up with the Duramax ecms, but can figure out the 03-05 cummins

[2007 5.9]

All Duramax ECM's are CAN-BUS based communication. 03-05 Cummins is SCI which is Chrysler specific portocol. Two very different protocols and apparently more work then all of us think it is.

[chevycummins1]

I know the industry has been hoping and dreaming of real tuning for the 03-05 trucks

[chevycummins1]

Do you or know anyone that has done the newer ecm swaps into the older chassis??

[2007 5.9]

Yes it's been done, there are 2-ways to do it.

Piggyback which works sometimes and the builder is hard to reach.

Straight swap and repin but you lose all dash function

[chevycummins1]

Have you done any tuning with the piggyback method? What is all involved with that method?

[2007 5.9]

I have, there is a gentleman that makes a harness that allows you to run a 06 and 04 ecm simultaneously, you'll have a constant cel, and from what I've heard recently the guy who makes the harness is very hard to contact.

[chevycummins1]

Do you have any contact info for him? And is there a way to get rid of the cell or just live with it?

[chevycummins1]

*cel

[2007 5.9]

No way as I know to remove the cel.

Search Lee Reiff on the Web

[chevycummins1]

I'd really like to find a way, I have a bunch of customers begging to have efi live on the older trucks

[mpdtune]

I'd really like to find a way, I have a bunch of customers begging to have efi live on the older trucks

The only option is UDC on a Smarty Device. It's not EFILive but its completely possible to make decent tune with it for a custom setup. I've done an ECM swap, not worth the cost compared to UDC in my opinion.