On my 95' Trans Am I have a 255lph intank pump and on the 200 nitrous pills it drops from 43-45psi fuel pressure to 32psi. Would adding a 255lph inline pump keep the fuel pressure at the rail at 42-45psi on nitrous? Or whats my options?

 

It may help a little, but I suggest you consider one of my intank dual pump setups. These will support a lot more power (over 1000) & do not give you the noise or complexity of an add-on external pump.

Feel free to call for more info.