n54 fuel-it throttle plate vs meth 10sec

what is better for my setup? want options please i am looking to run high 10sec if possible 08 bmw 535i sport n54 rb turbo next gen plus turbos with all fixings outlets heat shields mmp inlets with bms air filters 3" cat less downpipes vrsf and heat tape wrapped 7" vrsf intercooler charge pipe...