Originally Posted by KapitalZ

Have you swapped the 3.69 stock FD to 4.08 FD? If not, then it might provide the 'bang' you're looking for at the track without the need to boost your Z (and avoid opening the can of worms that Rusty mentioned), as demonstrated in the acceleration comparison video attached to this reddit thread: https://www.reddit.com/r/370z/commen...f_these_tests/