I have the ferrita down pipe and cat back with a MTE map.
as you have found out it sounds good. Quiet when needed, no drone at motorway speeds and a sporty sound when giving it some.
I am happy with the MTE map. You will have to have the down pipe to get the most out of it. Unfortunately you will have to put both on together. If you just do the down pipe it will bring the EML because less back pressure and it will boost a little higher. If you just put the map on, you won't get the full Benifit from the map.
What year is your car? Mine does not have Volvo spaced out like yours.
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