Jimmyboy you are yet again talking complete bollocks

I don't have chatter on the Escort. It's MFi I would not do anything to the car just to make it chatter.

I have chatter on the Fiesta as it's EFi and I fitted a cone filter. I did not however fit the cone filter for the chatter I fitted it to aid induction.

FACT A DV IS NOT REQUIRED ON AN RST OR COSSIE UNLESS YOU ARE RUNNING OVER 30psi OR ARE USING A T4 TURBO

A DV can actually cause the turbo to overspeed which IS damaging.

If you fit a DV in most cases it's being done for the look at me factor.

Once you can grasp this please feel free to come out of kiddies corner and play with the adults