Subframe

[EG4]

Does neone know whether you can change ur subframe?

or would changing ur subrframe make ur chassis unstable hence unroadworthy?

plus does having a tie bar make ur chassis stiffer?

[VTi-RT]

I would assume if you can take it off, then you can change it legally.

Tie bars do make you car stiffer, but it's not as noticable as having a swaybar or having upper struts in your car. It would be one of the last suspension components I would add when I've done everything else.