Originally Posted by Poolside
|...Fitting a smaller front sprocket only masks the transient fueling problem. And here's something... Fitting an IICE Air also only masks the transient fueling problem.|
The IICE Air, and other competitive products, are designed to enrich acceleration, not throttle tip-in.
Now, if you dump enough fuel in during acceleration (setting the IICE Air to -30° for example), it will make a small improvement to the initial lean condition at throttle tip-in. But it will be overly rich during acceleration and will not feel as crisp.
So while there is a small improvement to one, it comes at the expense of the other. It's a blunt instrument approach that lacks refinement. To fix the 'lurch and lunge' at throttle tip-in, and really make the throttle responsive, you need an IICE Cool.
Thanks for that explaination....
Said briefly (and I hope accurately), during leading-throttle the engine goes into open loop mode ignoring the O2 sensor, and fueling the engine based on a map using the relevant DME inputs -- one of them being air temp. With the IICE Air, the DME is fooled and made to think the incoming air is cooler/denser than it really is, and thus uses a slightly richer fueling than it otherwise would ... So far so good I hope....
Now ... the IICE-Cool will be messing with the coolant/oil temperature sensor. How is it that the DME uses this input during tip-in (and will be fooled by IICE-Cool) into giving us the digital equal to a bigger accelerator pump?