[Brian894X4]

The points you're bringing up have a lot to do with survivability durability of the 1FZ when supercharged. What I was talking about is the ability to add a supercharger and not modify the engine management system in any way that I'm aware of and still allow the engine and entire system to be factory warranted and smog legal on top of that. There may be other engines that you can turbo or stick a supercharger on without changing the timing, ECU or anything else, but how many of them will be factory warrentied and still pass smog in all 50 states? Seems to me the engine managment system in the 1FZ must have some serious adapting abilities.

BTW, I ran a tank of 92 for the first time this weekend and I was surprised by the results. No major seat of the pants difference. Scangauge is inconclusive, since I can't compare direct apples to apples. But I did notice some major mileage improvements. But this was just one tank. It's not conclusive, but enough to make me to want to keep trying it and see it if the results are consistent.