Cylinder deactivation with MegaSquirt?

V6 Technical/Performance Discussions
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Nd4SpdSe
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Re: Cylinder deactivation with MegaSquirt?

Post by Nd4SpdSe »

Your right, look at the Toyota Sequoia, the V8 gets better milleage than the v6. And that a Viper can get 30mpg. My ZE gets way better milleage than my old ever K8 did, can't even come close, no matter how hard I am on the throttle.

Depends on the Hybrid system and how heavy your foot is. I think that Hybrids are a good marketing ploy and make people with heavy foots feel better, but I think this is just a band-aid fix for more complicated problems that will arrise from aging hybrids. Pug-in hybrids like the Volt and how some people convert their Prius' are a better solution

As for the use of fuel, the way I looked at is, the motor still need to make X power to do whatever work that needs to be done, so I thought that the deactivation would be pointless, cause running on 6cyl, or cutting them off and running just 3, the motor needs to make the same power to overcome weight and wind resistance, so either the 6cyl runs half as much, or you have 3cyl working twice as much to make that same required power.

According to the Wiki article, it's said that a harder working cylinder is actually more efficient, which would make sence, but I'm wondering if that better efficiency is really worth it, considering the loss from the compression of the air (cause you don't get all that power back), and the extra weight of moving those unused parts in the engine. It's reported that it's only a 4-7% gain. People report seeing a gain in power just upgrading the stock ECU to a MS system gains power by itself. I'm sure with that gain you get better milleage because it's managing the system more efficently. I could see sequential on MS be a good thing for more power and better efficiency, but as for Cylinder Deactivation, I'm theorizing that, for our motors, that it would be alot of work for little to no gain. The motor has to be designed from the ground up for that, and even than, you only get 4-7%....
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