help with base tune 6.8L
I finally got to crank my new 6.8 (it only took a year) and I am looking for some tips that might help steer me in the right direction. I think there are only two sensors in their original location, everything else has either moved or is a new sensor. I think the largest changes were the ZR1 MAP, LS2 90mm TB, ID1000cc Bosch Inj MAP referenced and 1L displacement increase. All of these have been taken into account based on either manufacturer supplied data or data I found here.
Any ballpark startup air and base airflow #'s? I am modifying most of my data from a base tune 6.0L LS1B silverado and my old COS5 Z06 tune. Startup was super rich (to the point I was pegging the WB and smelling unburnt fuel). I used the spreadsheet to calc startup VE, increased startup air, increased startup AFR (these were seriously rich) and increased base airflow.
It will now crank for about 3 second and fire at which point I have to hold a steady 12% GM.APP to it to swing around 1100 to 1300 rpm. Main VE seems to be close so I'm not really worried about that yet. As soon as I let off it will die.
Does the LS2 tb require any other changes than B4349 0.0191?
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