I just received a ES110-0017 unit. Looks just like what's in my airbox right now. Went to the Honeywell info sheet on line and learned the the ES110-0004 has a shroud over the thermistor tip. The 0017 as well as the original unit in my airbox does not. What if all the idle issues was caused by hot oil mist screwing up the thermistor tip? My sport didn't start the searching at idle until 1500 miles. Ordered one to try.