So I tried adjusting everything with the DD module in place,no luck. I followed the procedure BrandonHall10 recommended,using just the PassThru direct to the ecm,without the DD module,we did the calibrations to tire size,gearing,speedo gearing,etc...and it shifts perfectly first time out. Huge Thank You for the info.
I definitely would look for a 00 2wd tune file because even those used a 4wd control module..having that said, Gen3 ECU systemOriginally Posted by Mikesfabrication
is not nearly as sensitive as Gen4 and Gen5 stuff like I was dealing with.
awesome good to hear buddy. Gen3 is definitely much easier to work with. I had read that DDmodule isn't really necessary with earlier ECU. glad you got it working buddy!
Did this work for you? I'm having issues with no shift on a swap, I am getting speed signal from the DD pass through, but no shift at all. project specs are 79 K20, STOCK 2001 5.3 DBC, 4l60e, Np241 Tcase,DD passthrough generator, 33.5" tires, 4.10s. and Yes I'm a rookie , all my other builds are manual trans, can someone look at my tune, I have a feeling its the speedo calibration , thanks guys Screenshot 2025-01-27 121347.png
Last edited by NMCRAWLER; 01-27-2025 at 06:25 PM.
I Re-Read the OP and ended up with the speedo inputs below, trans is shifting like stock now, good info if anyone has a similar setup to mine above. thanks
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