i`m not going to bother going down this route as i see it as an unsafe method, if it runs out and youre running massive advance thien i think its melty melty time..
i`m seriously thinking of saving for a nitrous oxide kit though
size your tanks right and it dosent run out, it comes into it's own with standallone managment tho where you have extra programable inputs and outputs.
with the s3 it's running port methanol injection and a water misters in the plenum.
i have the tank level sensor connected up to the ecu so it dosent go into mental mode without sufficent juice, water consumption works out to be about 25% that of fuel so now combined water and window wash tank is 15ltrs, meth tanks are 15ltrs each both under car as i don't liek the idea of neat meth in the passinger cell.
you'd never guess i make 15ltr stainless tanks at work occasionaly