Fifth Gear put nos on a mk3 tdi auto a few years back.....
I which I had seen that one..

Chuff on NOS!

Top Gear used a Jaguar XJS to try it on and it beat a few 100k supercars over a 3/4 mile sprint,
I am trying a customer to put NOS on his Bright yellow GT2871R Seat Ibiza, which should be running 370bhp from the last owner and remap, but it only pushes 314bhp on our dyno, the problem is that you can only use the power for 2500rpm, 4000 to 6500rpm is madness with 280bhp at the wheels, but getting upto 4k in each gear is like waiting a refund of a utility company...LOL I am sure NOS will get rid of the lag.
Nick