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Originally Posted by Ecky
Even under boost? That's surprising, but suggests much lower economy losses under boost.
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Yes, even totally flooring the car. At least with E100. And like I said before, under some specific situations I can see it report lambda values other than 1 (under DFCO and coming out of a pulse), so it's not a case of a broken ECU that only reports lambda=1.
I'm reading lambda from PID 34 (hex)/52 (dec), which is reported as supported by my car. But if there are suggestions of other PIDs which are more reliable for reading lambda, I'm all ears.
Quote:
Originally Posted by Ecky
I would think so, yes. There are some other confounding factors though.
For example with my K24 engine (10.5:1 compression), I have to pull timing at WOT below 3000rpm, or I get knock, even with 93 octane fuel. Undoubtedly timing is being pulled with cylinder pressures literally twice as high in a turbo engine. Some of those efficiency gains are being lost due to not being able to use MBT ignition timing.
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It looks like ignition timing is something I'll have to learn about. I'll start monitoring that gauge during my drives and see if I can learn something.
Quote:
Originally Posted by Ecky
With my Insight in perfect functioning order, with some small aero mods, before my engine swap, I was able to achieve around 100mpg @ 50mph, in good weather, which is around 43km/L. Even with the much bigger and less efficient ~240hp 2.4L K series engine under the hood, I'm still seeing ~26km/L at lower highway speeds.
I'm certain there's some more you can squeeze out of your car. I'll be looking forward to seeing what you come up with!
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Wow, I'm thoroughly impressed. Does it use a manual transmission? Are these figures for E0, or E10, or what?
My previous car was a Honda Civic Si (not sure if the engine was a K20Z3 or K20Z5), and I believe I got, only once, 20 km/l out of it, driving very very slowly, using E27 -- that car wasn't flex fuel. In the city, 12 km/l was an excellent mileage.
Just for the record, there's some help from your car's aerodynamics: according to Wikipedia, the 1st generation Insight had a Cx of 0.25, and the frontal area (if it's as simple as multiplying width and height) is about 2.30 m^2, so a Cx*A = 0.574. According to one source that I found, the up! has a Cx of 0.367 and a frontal area of 2.08 m^2, so Cx*A = 0.763 (about 33% more than your Insight). Also, I'm avoiding very high tire pressures on my car: I'm using about 35 psi -- not sure about you.
Regardless of these differences, these are very impressive figures.
Have you documented your driving style somewhere in the forum? If not, could you very briefly summarize it here? I know these are very different cars and engines, but I could probably learn a lot.