Subframe bushes would be one I'd be thinking about

What year and engine isit

The arrow in the attached picture is pointing to the exhaust flap/door motor.

We use the tool for the original filters because we only use the original filters but when we do come across one with flats we use the adjustable claw type removers like this one

https://www.ebay.co.uk/itm/293567696697

We have 1 In work, we have a large kit though cost a bit of money but this would be ideal for you though https://www.ebay.co.uk/itm/163424333727 Beware though original oil filters have the notches and flats where as some aftermarket oil filters that fit the k9k engine just have flats so sometimes th...

No no it's not too expensive you just need to get the inlet valves cleaned, and get the updated manifold if you want to reduce the coking.
Most garages these days will have walnut shell blasting kits to clean intake valves.

That's if this is your issue ofcourse.

P0300 or other misfire codes are known to be thrown on 1.2 dig t when the valves have coked up, on the QQ theres a new manifold and blow by hose that got introduced cor campaign before Christmas time 2019. Just food for thought if you still get it afterwards.

Connect units with software level starting with F should not be updated with D level software as this will cause issues with the connect unit and you cant go back to F software so will have to have a new unit. LCN2KAI are D software levels LCN2KAI EVO are F software and are installed on k14, j11 U2 ...

I would say that black connector isn't for the heated seat, im not sure what that is to be honest possibly the seat occupancy sensor pad although driver seat wont have this if this is a pic of the drivers side. I'd say this connector in this pic is your heated seat connector Harness wires to the hea...

The grey and brown wires are for the heated seats, the seat connector you have there is just a 1 pin connector? The heated seat pad requires a power and ground to work can you post a pic of the seat connectors under the seat