Porsche Cayman GT4 On SIC/ 420 HP/ 8,000 RPM/ 6-Speed Manual/ What Smile Ratio? / YS Khong Driving
I was very impressed with the previous Porsche Cayman GT4 – That was some years ago, but here we are again, and this time it is at the Sepang International Circuit – Now with 420 horsepower, 420NM of torque, the Cayman will scream at 8,000 rpm.
The engine is from the 992, but it is now placed midship in the Cayman, a layout that is known for its superb handling characteristics. Six-pot calipers at the front, and four-pots at the back, with Carbon Ceramic Rotors provide sure-footed stopping power.
The GT4 brought a lot of smiles to me before – what would the smile ratio be? Well, I am masked in a balaclava – but you can see my eyes laugh.
The smile ratio is indeed somewhere between 9 and 10; Enjoy!


![[ID: obtAiy28y74] Youtube Automatic](https://media.yskhongdriving.com/2026/03/15171203/id-obtaiy28y74-youtube-automatic-236x133.jpg)
![[ID: epYA2kqIJ80] Youtube Automatic](https://media.yskhongdriving.com/2026/03/15171207/id-epya2kqij80-youtube-automatic-236x133.jpg)
![[ID: kMmTNdMyqrY] Youtube Automatic](https://media.yskhongdriving.com/2026/03/15171209/id-kmmtndmyqry-youtube-automatic-236x133.jpg)
![[ID: CjeoGXgfPgI] Youtube Automatic](https://media.yskhongdriving.com/2026/03/15171215/id-cjeogxgfpgi-youtube-automatic-236x133.jpg)
![[ID: lIensBn-iYw] Youtube Automatic](https://media.yskhongdriving.com/2026/03/09152647/id-liensbn-iyw-youtube-automatic-236x133.jpg)
![[ID: A7xt7b2yVKQ] Youtube Automatic](https://media.yskhongdriving.com/2026/03/09152650/id-a7xt7b2yvkq-youtube-automatic-236x133.jpg)
![[ID: FC_HURIMd38] Youtube Automatic](https://media.yskhongdriving.com/2026/02/25141729/id-fchurimd38-youtube-automatic-236x133.jpg)
![[ID: jBN_tyKRlsI] Youtube Automatic](https://media.yskhongdriving.com/2026/02/25141733/id-jbntykrlsi-youtube-automatic-236x133.jpg)
![[ID: KCgsFJH_-UI] Youtube Automatic](https://media.yskhongdriving.com/2026/01/29102829/id-kcgsfjh-ui-youtube-automatic-236x133.jpg)
![[ID: 1tb35ZizE08] Youtube Automatic](https://media.yskhongdriving.com/2026/01/19103726/id-1tb35zize08-youtube-automatic-236x133.jpg)