Thanks, got that part, I have the stock bin file, 411 ecu, punouts and all the stuff needed. Only question I have is the 4x4 stuff in the tune. Express vans did not come 4x4. Looking for anyone that have done the 411 l31 swap on a 4x4 to see what needs to be changed in the tune.
I have not done the swap your asking information for.
I'm thinking 4WD Low is the concern. The transfer case will signal the PCM that 4WD Low is engaged, usually with a switch on the transfer case sending ground to specified pin on the PCM. The thinking I have is 4WD Low shift points for an automatic transmission will need to be compensated for.
Maybe "compare" a 4WD .bin file with the same Operating System (OS) as the L31 .bin file OS. Maybe your using OS 12216125? The link above has '02 Chevy K1500 5.3L OS12216125.bin
dave w
4WD.jpg
That is what I pretty much figured. I think on my pinout there is wires for 4 hi, and 4 low. Just have to see when I get to that point. But thanks. Maybe some that has done this swap will let us know.
Maybe someone will help out, or maybe it needs to be figured out?
dave w
4WD Input.JPG
Change of plans, my trans went out. So as I am changing that, going to put my 24x/cnp, with the tuned port injection. So I'm looking for a bin for a k2500 suburban, any ls motor/4l80 trans with flex fuel, for a 411 pcm. Or as close as I can get. Thanks
Maybe? http://www.gearhead-efi.com/Fuel-Inj...rPro-Bin-Files
dave w
Hi,
Many of the '01 and '02 Express van L31 + 4L80E calibrations appear to be fully compatible with 4X4 vehicles. A number of the van files on gearhead-efi came from cutaway vans in our fleet and are definitely set up to work with a GM 4X4 vehicle. I believe several of the 6.0 + 4L80E calibrations were the same way. Look at the option flags to confirm 4X4 is selected then look at the constants to ensure the transfer case low ratio is correct. If I think of anything else to check I will post it here.
Here's an 0411 with 6.0, 4L80E, 4X4 cal.
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