I have just changed over from GTT header,high flow cat,standard cat back to GTT header,de-cat pipe & milltek cat back.
and
its too boomy,too noisy and its keeping the neighbours awake
now should i keep the milltek and de-cat on the car but try and get another resonator clamped to the milltek or re-fit my cat and keep the milltek as it is?
any views would be appriciated, oh my cat seems to be damaged also as alot of the honey combe has been squat
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