Just wondering if i should shift lower gear when going down hill at genting? Or the hill assist is enough?

Hello new owner here, i found out the car abit  lousy handling when speeding, should i go for ultra racing bar front and rear?

Easy way to test, at night, just use you handphone's "torchlight" function and light the 2 dots below your rearview mirror. You will see the rearview mirror will be a greenish tinge. You can try it during daytime too, but need to cover the front part of the mirror.

I'm guessing ur window tint must be quite dark? Mine is 70% all around, so I don't have any issues in terms of auto-headlights & rearview mirror auto-dimming. Only sometimes the auto-headlights would be wonky and not turn off after coming out of basement parking in the afternoon.
Just set as S, but D should be more than enough, unless you're really touge racing
Check your tyre pressure. Should be 220psi front and back. Or 240psi front and 230psi back if you're really driving above 160km/h often. I had the same feeling of lousy handling, until I found out that the tyre pressure was wrong (too high) as the tyre gauge at the petrol station was faulty. Kept in pumping too much air, even though I set it at 220psi.

Hey, 0168257061

May i know where did you get the PIAA LED fitted?

I have been looking around, too many Generic brand imported from China. Not sure about their cons tho, i think i would prefer to install PIAA LED conversion.