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Originally posted by snoman
...The auto makers use knock sensor to retard timing to try to minimize the knock with low quality fuel but it hurts performance and MPG too...
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"Low quality" fuel and 87 octane fuel aren't necessarily one and the same; you may not have explicitly stated this but the above comment, taken in context with your other posts, clearly implies that the two are indeed the same. As such, it can almost be considered a non sequitur...87 octane fuel may very well hurt performance and/or fuel economy, but it should not be generalized as "low quality".
Plus...if you believe that those of us who pump 87 octane gas in our $30K-$40K trucks instead of 89+ octane are doing so because we are being cheap--remember this quote?
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Poeple as a hole are too cheap to spend a extra 5 or 10 cents for better gas even though they will shell out over 30 grand for a truck and then complain it runs poorly on the cheapest gas there is.
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--you are grossly mistaken, and I'm sure others would take offense to such a statement. Again, my truck runs fine on 87 octane; am I being
cheap for doing so, in light of this observation?
As far as "modern" engines go...how "modern" can the Vortec/TBI be? If you consider the fact that GM is still pushing their two-valves per cylinder pushrod engine on the majority of their vehicle lineup--like practically all FSCs--then I guess the foreign manufacturers are light-years ahead of GM, what with their 4 (and even 5) valve, single or dual overhead cam engines. Heck, IIRC even Ford now offers multi-valve (more than two) overhead cam engines on quite a few of their vehicles...like the current F-series truck and Mustang GT, to name a couple.