Help guys I recently Got a b20v and it's giving me idle issues.cold starts would
be around 2500.once warmed up it would start to surge..now SOMETIMES when warmed up and coming to a stop I put it in neutral to coast and rpms would go to 1-2 ish up down up down..till i drive off again.tried cleaning iacv,checked for leaks,checked injectors..also i once in a while I would drive and a cel would come on.i go and turn it back off and it does away.i tried checking if there were codes and none came up.last owner tuned it on hondata.can some give me some help