FAST EFI & N2O

[fordpop]

Guys I have a dilemma on the best/safest way to run nitrous on my FAST efi equipped 468BBC.

The CR is 13.75:1 on the motor and has run a best of 10.01 this year. Everything is forged - pistons rods and crank so should take a 300hp shot. I want to run a progressive system for best tuneability. I run on street treads.

My big question is how do I control the ignition retard?
Can I do it progressively through the MSD 7AL or do I do it through the Spark MAP in the ECU??

The second issue is with the injectors - how can I be sure they will flow enough extra fuel for the nitrous?

Cheers

Dave

[doctor408]

i believe fast makes a separate harness that plugs into the exsiting fast harness especially for nitrous. my friend has it but he has the xfi system. i would call fast, they will tell you the best way if its compatable with the system you have.... good luck