downpipe or remove resonator pipe

[UNtamed67]

What's the best move to win some extra db in combination with a Ford racing touring axleback on an Ecoboost.

1) remove resonator pipe (replace with eg flowmaster y-pipe) = Guess there is no power improvement?

2) Catted downpipe Mishimoto, extra sound extra power, more expensive

What will be loudest ?
Not looking for excesive sound improvements just a little extra deep tones...

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[stang77]

What's the best move to win some extra db in combination with a Ford racing touring axleback on an Ecoboost.

1) remove resonator pipe (replace with eg flowmaster y-pipe) = Guess there is no power improvement?

2) Catted downpipe Mishimoto, extra sound extra power, more expensive

What will be loudest ?
Not looking for excesive sound improvements just a little extra deep tones...

I went the full cat-back. I added my downpipe later. It's plenty loud for me.