[CU2] Does your car have an issue with a "post-combustion detonation sound"?

[unity]

Yeah will do thanks mate. Had been running Ultimate when I had my 350Z, and I think trying the Vortex 98 made it slightly worse.

What to do - just gotta pay the "Ultimate" price I guess.

Sludge and Aaronng's posts made me think that the CU2 engine maybe far more sensitive to fuel RON that we might think - despite the manual stating that it can run on 95RON - I don't even want to think what running Shell 95 will do on it!

What do you think of BP's 95 premium Type R Positive - do you think in times of high prices it is an acceptable tradeoff to Ultimate?

This is unrelated to the pinging issue however in the last few weeks I have started using Vortex 95 on the advice of Buddah (thanks buddy) and have found no difference in the fuel econony when compared to using BP Ultimate 98. Car feels no less responsive.