Start at factory setting and make very small adjustments in until it feels strong but you still have smoke… lean is mean but rich is safe!!!
What fuel? Brand, nitro %, oil content?
Just my sole opinion because I’m no expert my no means…
Iv always got the best results tuning on the ground with the engine under a load..
Generally speaking if it runs good right off throttle that’s your low side setting..
If it’s dying I would say you are extremely lean..
The smoke you...