[EVmattyP]

Hi Craig
Forget the ultracapacitor - what you need is a new "brain board"

Nissan parts will give 100 hp for 200,000 miles with low warranty failures

If you are willing to drop the reliability then all you need is the brain board to tell the Nissan bits to go for it a bit more

https://pandspowerelectronics.ecwid.com/#!/P&S-Circuit-Boards/c/16287307/offset=0&sort=normal

looks like the store is closed. Any other vendors selling anything along these lines or links to where I can read up more on them?