help with timing please

[red L98]

Hey guys I plan on taking the car to the dyno this week and spraying the car. The only problem is I have no idea what my WOT timing is and I don’t feel safe spraying the car. The tuning was done by Jesse ski_dwn_it and the car runs great with the tune. The base timing is set at 8* at 1000 RPM with the ECS not connected at 25* with it connected. When you connect the ECS does that show you the total advance See on none computer car to set the total timing you just rev the car up to 2500 PRM and it shows you the total timing. Or is the total timing programmed in the chip I was told to be safe you have to set the WOT timing at no more than 30* with nitrous. Its only a 150 shot what do you guys think I should set it at. I run 110 fuel in the nitrous cell and 100 in the cars tank.

[REDC4CORVETTE]

You need 1 1/2 degrees for each 50 hp with 150 that would be 4 1/2 degrees retard.
Total timing should be 28 to 30 degrees at 3000 rpm.
but that is with about 106 octain I think you can put more lead in with a 110 oct.
If she flattens out kill it when you hit the juice, many dynos have blown a motor due to the long lag between shifts .