Have an 04 Silverado 6.0/241/ls7cam/On3 turo kit. Running around 11lbs of boost. Spark advance chart is around 18* once boost hits but it drops down to 11*. Its not coolant temp or IATs pulling it down. I don't see where else its pulling from. Anyone have some history with it? Waste gate spring also suppose to be 6lb spring but jumps to around 8psi and creeps to around 11ish with no boost controller and feed line from turbo to bottom of waste gate.
Maybe I missed something in Torque management or something in Max torque table but max torque is higher than 11*