Blown Engine Warranty Claim Denied

[wilko7]

My 2013 Ford Focus ST which is still under Ford warranty blew its engine last week.


After being recovered to the Ford dealer i purchased it from and the engine stripped down, it was found that a piston had failed. (Broken around the ringlands)*


My engine had two modifications to it those being a cold air intake pipe and a sound symposer blanking plate.


Ford have denied my warranty claim because of one of the modifications the sound symposer blanking plate. Their explanation (fords according to the dealership ) is that "the symposer blanking plate has caused excessive pressure within the inlet manifold which in turn produced too much heat and thus the piston has failed"*

This was verbally given to me over the telephone by my service manager. I am yet to receive this outcome / explanation in writing. I have requested this from Ford Customer Relations but have been told it will take several weeks to compile.

In relation to fords explanation i know this to be incorrect and have had a qualified mechanic provide me with evidence to that fact.

I have also done some research in relation to other customer's that have suffered the same fate and i have, both stock engines and modified engines have suffered from the symptoms as i have but they do not have a blanking plate therefore again proving fords explanation incorrect.

Has anyone got any advice or know anyone that has suffered the same issues as me?