Safe
I read the sticky and it said the bottom end is pretty safe to the 500-525 range and i am already at 450rwhp on just motor
- Sprak Plugs : You will need NGK BR7EF ( 2-step Colder ) for any shot from 150 and lower. If you plan to go higher than that use NGK BR8EF ( 4-step Colder ) .. don't forget to gap the spark plugs to .032~.035
- Tuning : This is very important, tune your car for the size of shot you are looking for. If you use timing controller start by pulling 2 degrees for each 50 HP of N2O ( Very Safe )
- Fuel Supply : It is a must to upgrade your in-tank fuel pump when using wet system to Racetronix or Walbro 255 pump along with wiring harness since you will pull fuel from the rail
- Nitrous Pressure : The more shot, the more pressure drop ! .. try to use heater/Nano for your nitrous bottle to keep the pressure 950 psi .. alot having backfire because with the time the nitrous pressure drop, your intake fill up with fuel ( Fuel being more than Nitrous in the mixture ) >> running rich >> and cause back fire

