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Originally Posted by poomanchu
Here is my big issue with EFIE. As I understand all EFIE is, is a circuit to trick the o2 sensor into reading higher, thus leaning out the engine.
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As I explained in a previous blog, the EFIE is not a fuel saver. It cannot lean out the engine more than the CPU will allow (and that isn't much). The EFIE is designed to allow ACTUAL combustion enhancement technology (like my HyCO 2A or HyZor) to work on EFI engines.
The amount of fuel you save will depend on the fuel saver, not on the EFIE. The EFIE is designed to 'correct' the oxygen sensor signal when it lowers voltage due to increased oxygen in the exhaust. This increased oxygen is NOT caused by a 'lean' mixture (see previous posts).
Quote:
Originally Posted by poomanchu
However, there are many people who use this device to tune for fuel efficiency. This is easily searchable on google. How does plugging in your device give much better mpg (by your calculations) than people running fully tuned and custom maps?
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It doesn't. But most people don't understand the difference between traditional combustion and efficient combustion. When you increase combustion efficiency, your exhaust oxygen percentage WILL rise and you will NOT lose power or have high exhaust temperatures. I know it sounds hard to believe, but this is exactly what you need to learn to duplicate what I've done for years.
The EFIE allows people who don't have your equipment to simply and easily 'correct' the oxygen sensor signal so that the CPU doesn't know that there is extra oxygen in the exhaust.
Modern computers are programmed to react to traditional combustion parameters. They do not 'know' how to handle the changes that happen when the combustion characteristics change. But then most 'engine tuners' don't understand this either. Their equipment is programmed to (and the tuners) make certain 'assumptions' based on the combustion characteristics they 'know'.
When the combustion characteristics change, so must the thinking and programming of the tuner and his equipment. The key is to learn what's actually going on. You don't need to believe just me, go onto YouTube and see the people running lawnmowers on fuel vapors, see how long they run compared to dumping the liquid fuel into the engine. (there are vehicles too but a lawnmower is easy to experiment on, for you ecomodders)
Quote:
Originally Posted by poomanchu
Adjusting the o2 readouts without anyway to monitor seems like a recipe for detonation. Also you achieve 36/1 af under load? Where I come from that means detonation and you needing a new motor.
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The EFIE will never cause a mixture so lean that the engine detonates. The worst that will happen is that the CPU goes into limp mode (open loop) if it 'thinks' the fuel mixture is too lean. The EFIE is not intended to lean a mixture (although I understand that people try). The EFIE is designed to correct for a change in the exhaust oxygen that is caused by combustion enhancement technology.
And the 36:1 af isn't 'lean'.
You missed the point of the calculation. The 36:1 af is the ACTUAL fuel ratio of an engine that mechanics are taught to assume is getting 14.7:1.
Do the math yourself on YOUR vehicle. Ignore your tuning equipment for this exercise (I know that'll be hard for you). Go straight for the RAW DATA! Actually travel down the road, looking at your scan gauge. Lock in at 60 mph and find the engine rpm and gph (or mpg). You already know your engine cubic displacement. Check with your OEM to find your volumetric efficiency, and then do the math.
My experience is that most 'knowledgeable' people will not do this experiment, because I might be right and then they'll KNOW that they've been taught lies. It's a really hard thing to find out that the education system you've trusted has let us down for generations. I've had years to be OK with it. I don't expect any of you to change overnight... But the truth always wins in the end, even against the billions of dollars that've been spent suppressing it.
Quote:
Originally Posted by poomanchu
Obviously leaning out the car will increase fuel economy. It just scares me to lean the car out in the way you do, a o2 sensor 'hack' if you will.
Lastly and it has been asked; what are you driving currently and what is your mpg?
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I don't 'lean out' any vehicle with the EFIE. It pretty much can't be done because the CPU won't allow but a small percent change. I increase combustion efficiency (decreasing the need for fuel volume to get the same performance) and then use the EFIE to 'correct' for the resulting extra oxygen in the exhaust. The extra oxygen comes as much from lower (almost none) CO and NOx as it does from lower fuel fed into the engine.
And lastly, when I get the time I'll be entering my projects into the garage. They currently include an 1974 Onan RV generator, a 1984 Honda Civic, a 1984 Volvo 245, a 2003 27 foot class C RV, and a 2008 Aveo.
Once in the garage I'll start entering data so you all can see the charts and won't have to 'take my word for it'. I really like that about this website!
In the meantime, I'll spend a little time here whenever I can, to clear up some of these combustion enhancement misunderstandings. Again, thank you all for the welcome and respect you've shown.
I hope to be a real contributor here. I can now see my first challenge is to persuade some of you to actually look into true combustion enhancement technology. I'm seeing it'll involve a paradigm shift. I'd forgotten how far I'd come because I stopped talking to skeptics years ago, I found it to be a waste of my time. I spend my time actually helping people. My customers only care about results, the WHY is of no issue (to them) when it works. Here I hope to talk to peers, about the WHY and then about the HOW and then see the results
One step at a time.