Looking for 03-05 4.8/5.3 tune

[knightracer_08]

I am looking for a factory tune for an 03-05, I just need a base to revert my 06 to so I can start with to build a turbo tune, if someone already has a good turbo tune I would be much appreciative to get one as well. I have an 06 silverado, 4.8, 5 speed, custom built forward mount turbo, 2 bar map and 56# injectors if that helps any. thanks.

[Lextech]

I have a 2004, 4.8, 5sp, DBW stock calibration. If you use it---The first thing I would do is make sure the DBW works. Just to make sure the 04 tune is compatible with the 06 DBW components.

Jeff

[Taz]

... Just to make sure the 04 tune is compatible with the 06 DBW components ...

Hi Jeff ... good thought process ... these are not compatible.

With Sierra / Silverado .... 2003 to 2005 used "common" DBW components and PCM calibrations ... 2006 & 2007 are also "common" to each other ... however these two groups are not cross compatible.

Cheers,
Taz

[Lextech]

Hi Jeff ... good thought process ... these are not compatible.

Hhmmm, I didn't think they were but, wasn't sure. He asked for an 03-05 and the 04 that I have seemed to be the closest to his setup.

Thanks Taz.

Jeff

[Taz]

I'm not sure what the exact intent is either ... in the original post it mentions looking for an 03-05, but also mentions reverting an '06.

Your 2004 tune would work with the 2003-2005 (with some changes), but would not work with a 2006.

[knightracer_08]

Yes, in order to put a cos into an 06 you need to swap the accelerator pedal, wires and tac module to an 03-05 then download the older program. I got this info from black bear performance who contacted me after emailing efi live with my issue.

[Taz]

The Devil is in the small details ............

[knightracer_08]

Thanks for that tune Jeff, can anyone tell me where to start or how to tune in larger injectors? Going from stock to 56 pound. Thanks, Eldon.