To the point!
I have stock cats, stock mid pipe that has x-pipe with resonator and just deleted mufflers with the regular quad tips. When I'm driving normal it sounds like if the exhaust gas is not escaping good. Speeds of 30mph to 60mph cruising it has a horrible whine sound. It stops if I slightly get off the throttle but comes right back if I slightly tap it again.

Do I just need to remove that other resonator on the mid pipe? What is causing this annoying sound. Car still scream and sounds great on full throttle but cruising normal at those speeds is annoying. Anyone else get this?

Sorry if my explanation is vague.

 

Very common result due to removing the stock resonators/mufflers. Either put the stock stuff back on or plan to do some experimenting to get the sound your looking for.
Maybe it's a drone type of sound? Yes make some changes and see if it's what you want?
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I had a e92 M3 many years ago. There was a guy on The M3 forum who done exhaust mods that were very popular. I had it done……………I really didn’t like it. It sounded broken and was replaced with Akrapovic. Expensive but well worth it.

Seems to be a real lack of quality exhausts for the F type (I’m looking at) and jaguars generally.

 

Have a used mina exhaust in the marketplace for sale if interested.