A5 build and gearbox issuse

[Stucan]

Hey looking at doing a build honestly would like to get 400bhp and would like to know if anyone has any advice, currently have a cp3 fuel pump, egr delete and dpf delete, anyone know of anything else to get me there ofc a hybrid is gonna happen not sure what turbo yet but will have to find one. Also has anyone had issuse with the 7 speed box atm im running 335bhp and 700nm and it sometimes struggles to change gear fast enough and will just sit at redline for a bit before changing