A couple of questions:
Why is the simulation performed at atmospheric pressure as opposed to some elecated pressure? What effect would that have on it's results?
Just how optimistic is 100% vaporization? This thread makes it sound quite unlikely, yet that link is highly dependant on that.
30% certainly sounds "optimistic" to me.
I can't help but wonder if there is some problem with the simulation software near special cases. What happens if you enter a runner length of zero, or near zero (0.001 if zero is not allowable)?
Have you wandered around a racetrack and...
Perhaps I should simplify my position
The drastic overfueling experienced by Brandnew is almost certainly not the sole result of IAT sensor position
On modern OEM ECU's, it is hard to say with certainty (unless one of you here actually helped develop it) that we are aware of ALL the parts of...
Actually, maybe cold start will be the least of his worries
As stated above, IAT, while it does affect fueling somewhat, on a MAF system it does not affect fueling nearly as much as it does advance. So, he will have to tell the ECU that it's WAY hotter to get just a little fuel out, and in the...
Yeah, then you could buy a tornado for your intake and a display that shows "A/F" based on only your narrowband EGO :)
Keep in mind that something such as suggested above should not be viewed as "permanent". MAking your ECU think it's cold starting will also alter your spark...
Don't most MAF sensors have built-in air temperature sensors?
On a true MAF system, my understanding is that it will always measure the correct mass flow rate, so IAT sensors do not do much for fueling compensation of "denser charges".
What they tell you is that, when the intake is...
I don't think I'd be too hot on the idea of stapping my oxy-acetylene (or oxy-propane in this case) torch in the trunk of my car and trying to drive off of it, but to each his own. :)
I think you still run into a problem, much as you did with the CO2, of maintaining the flow rate of oxygen. If...
I'm not sure I should be doing too much more advertising on this site :)
you can email me at aallen@injectionlogic.com
We make our own ECU, comparable to the Holley Commander 950 in capability I would say (they've got a few things we don't, and we've got a few things they don't). I think our...
I work for a fuel injection company, we develop our own ECU, so we are well aware of the manufacturing and development time. It would eventually be a released product similar to the link provided (stand-alone trans control), as well as built into our current ECU. However, our target price was...
