[Romer]

Originally Posted by turbocruiser

I guess as I made a mention of in the other very recent thread on this subject. I don't know how we will ever quantify this in the real world and unless we can somehow quantify this in the real world all the postulating and presuming is useless. More importantly, as also already mentioned, the thing about higher octane for many including me (and prolly you too Ken) is not so much if it makes 'more power' or if it offers 'more economy' it is simply a function of what works with a Forced Induction, specifically a turboed (don't know if it is the same with superchargers), 1FZFE. The fact that anything less than the premium grade puts the turboed 1FZFE at pre-detonation risk is reason enough to use it exclusively. It is also to me proof that, to an extent, even with the dual knock sensors at a particular point the engine cannot compensate for lower than required octane. Think about that for a flash - if a turboed 1FZFE will knock and rattle and roll with low and even mid grade gas isn't that proof (although the real mechanism is the higher combustion chamber pressures and temperatures) that the knock sensors, as good as they are, do indeed bottom out on octane that is too low to go with the power demands during driving!?! Inversely, the more octane you are able to run with the turboed rigs the less likely you are to ever even activate the knock sensors at reasonable boost pressures. Further, push the boost to the point that you get a little knock going with premium pump gas and then goto the race gas ... little knock goes away again. I think you see the point ... for many people it isn't about any extra "power" or "economy" ... it is about the octane and proper detonation. If however we really are going to give this nut a crack on the power and economy factors, I suggest that we establish a very duplicable methodology to measuring the differences, otherwise, well, I think I used the word useless above right. You get my drift.

Shaun,
I don't think you understood my point. I don't expect to solve it or come up with an answer. I just enjoyed the level of conversation. Kind of like two guys at a bar drinking some beers wondering some things and not coming to a resolution, but enjoying the conversation.

Kind of like wondering what cdan thinks when he is looking at my avatar. Is he thinking "handsome devil", "Damn thing still hasn't washed off" "Damn that Hants White" or "Why do I copy that damn Canadian" Unless he tells us we won't know.

I am supercharged so I run Premium anyways.