I have just fitted the phase 3 and thought it would be best to change the fuel filter. I'am using a GTE tank with an external cosworth pump, the filter is between the tank and pump at the moment. Since I fitted the new filter last night the pump seems to making a few noises that aren't normal, possibly nearing the end of its life, would this be the raise in fuel pressure causing this? is it normal or should I just replace it.
What filters have other LET nova owners used? I've seen a few fancy ones for silly money but I'm sure there not any better than a standard cossy filter?

Any ideas?