The only thing to watch for is the ethanol delay period. So any combination you can think of the tune will “adapt.” If tuned correctly, the tune is autonomously blends ALL these tables from pump gas through e60 in real-time based on the scaler. So it’s running basically both maps at all times with a scaled between the two in it’s real-time memory. However, the tune is has all the major maps, injector offsets, Boost, timing and many more “blended” by this ethanol scaler. (Ideally with stock HPFP you keep it e63 or less.) This scaler is theoretically actually blended from e0-100 theoretically. The flex fuel tuning is based on voltage to ethanol content scaler. AVCS is in high overlap and engine is less prone to false noise in this area in my experience. I do feel these cars seem to be happiest around 2350-2750rpm cruising. I’d say 50-75% of cruise knock (on a properly tuned car) is actually false noise from an overly sensitive knock control system snd shouldn’t be alarming. Unless there is blatant errors in tuning it is almost impossible for a tune to cause bearing failure. There is no tune that car cure an inherent bearing issue or prevent it. It just normally happens while cruising or speeding up under 10psi because well that’s what you’re doing 99% of the time you’re driving. These cars do have some Rod/main bearing issues. Most of these engines that go cruising knock likely had no effect. Most of the DAM issues cruising are mainly plug or intake valve related. Usually “real” knock happens on an FA in the 4500+ rpm WOT if there is a fuel, timing issue. I personally would never drive ours, tuned or not, according to the Subaru manual recommended shift points and have had used oil lab analysis combined with sensor data to determine that. This driving style appears to nearly eliminate knock events. A lot of people with no access to data seem to have a head in the sand approach, while those of us with data access have seen these engines are much happier revving higher, like shifting around 3500-4k so shifting doesn't allow engine speed to drop below 2500rpm. In your opinion or better yet based on data Can you speak to the amount of knock events and resulting potential long term damage that a stock factory tuned FA20 experiences when driven in a way that the manual advocates for? I know from reading forums and such there have been people suffering engine damage from just doing 60mph with cruise control set in 6th gear which can cause sustained low boost levels under load at very low engine speeds. I’m sure they come from a good place, but it is quite literally not making even a fraction of a difference. The cherry on the cake is how the EPA is dealing with it. It doesn’t matter when the EV’s are charged by burning coal. Of course though, none of this matters one bit when the roads we drive on contribute just as much, if not more, pollution than the car making process itself. I was under the impression they took a lot of rare metals and generated abhorrent amounts of pollution.Ĭertainly isn’t pollution free, but it’s better than I thought. It’s been awhile since I’ve had this discussion, but I think modern EV batteries are mainly composed of iron, which is readily available and relatively not horrible to mine for. I was actually very much anti EV because of the battery technology, but I was wrong. Fuck, I’m not even sure if I’ll be able to escape the seemingly inevitable future. As a person in their early 20’s, I truly have strong beliefs that I shouldn’t bring a child into this world because they very well might have to live through literal hell. Yep…it’s overwhelmingly concerning and disappointing.
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