i want to spray a 40-50 shot nitrous on my vvl. i heard if u put it in front of the maff it would trick the ecu to read more air pressure and it would fix the air fuel ratio to run correct *** else do i have to do???????

lower timing,colder spark plugs,

I wouldn't put the nozzle in front of the maf. It will screw up your maf.

No put it in between the MAF and throttle body. If you have a decent dry kit, it will be setup to add pressure to the stock fuel pressure regulator to add fuel that way.