RE: Wren Idle Problem (Again)
My question is why the ECU's, which Wren buys in from outside, don't adapt more rapidly? For example, the Supersport in one of my models hadn't flown for about 6 weeks due to poor weather, and at first start up it idled at 65k. Why? I left it alone and watched it, it took 3 to 4 minutes to very gradually step down to the correct idle. In fact it took about a minute before it even started to modify the PW value, so it looked like nothing was happening. I can understand the ECU thinking that if PW=100 was used for idle last time then that is what it will use initially this time, but when it can see that the rpm is so far off target why doesn't it adapt more rapidly and actively manage the PW value in seconds in order to hit the required rpm?
Perhaps the problems that some people are seeing are caused by the ECU being extremely slow to react to changes in conditions, so slow that it seems that the high rpm is stuck and is not adapting?