Hi guys. I'm here to ask what are possible causes for this stumbling or hesitation on acceleration.
When I start to get on it, pressing the pedal nearly to the floor, i get this like chugging going on like its gonna die but at high rpm then all of a sudden it kicks in and I go flying down the road like I would expect, but initialy theres hesitation.

Please help me with possible causes

replaced plugs, plug wires, new electronic conversion.