SD tune

[447 LS2]

Trying to tune in SD car runs but won't take any fuel. just dead when I step on pedal
Help what am I doing wrong.

[ringram]

timing?
Are you using a wideband? If not, naughty you!
If its way out you might have to scale the ve table based on the few cells that you can enter.
I had to do this recently, gets you in the ballpark, then you can use normal autotune methodology.

[447 LS2]

Timing? yes i have a wide band car just idles for a while then stalls. But when it runs it won't take any fuel

[ringram]

Ok you might need to tune idle, so that pressing throttle transitions ok, it might only just be idling and throttle gives it too much air and it dies.
Do a search for "idle transition" you need to log rafpn and rafig calc pids against ect and adjust your desired airflow, b4307 from memory. Once thats good, then we can look at the rest of the situation.