Please Help! my 99 Boxster just wont start!

[marin3e]

Hi everyone, I am new to the forum and really need some assistance. My 99 2.5 Auto Boxster cranks but will not start.

I have replaced the fuel pump
I have replaced the fuel pump relay
I have replaced the plugs
I have replaced the crank angle sensor
I have had the injectors done
I have replaced the fuel itself.
If i spray "start you bastard" into the pots it actually fires but wont run.

I did notice that i cant hear my fuel pump running unless i bypass the relay despite having a new relay. Does the pump run as soon as you switch on the ignition?

I am getting fuel all the way to the rail but no fuel pressure.....

Can anyone help?

Thanks for looking

Brett