I am building a Natural Aspirated Engine (ford x-flow) and i would like to know what people have done when using the Cosworth ECUs for natural aspirated engines.

I have earlier seen cosworth-chips sold for this, but is the software on it different, other than having the headers(fuel/ignition++) set to 1bar?

I would like to use a TPS sensor instead of the MAP sensor, as the camshaft i am choosing is not very nice on idle.

(I do know that there are alternatives to the cosworth ecu, megasquirt and many more)
Erik