Setup is a h23a vtec (2001 ch9) in a 1990 Honda accord sedan with an auto tranny. Running chipped p75,ostrich and crome. My question is while I'm cruising around 30-35 I can hear a slight miss with the windows up radio off. I'm tried adjusting fuel maps,checked plug gap,plugs and timing. Haven't tuned my timing yet as I'm not finished building my knock box. But I was just wondering what peoples input is as to what could be causing such a slight miss. There is no miss anywhere else, not idle,not WOT, not cruising at 50+ it's the weirdest thing. Thank for any help.