I have a Hondata P28-obd2a ECU that has the built in conversion harness so you don't have to run one of those dumb piggy backs. There is Hondata S300 version 1 inside. The only reason I am selling this is because I will be running a Motec system this season. I accept paypal or money orders. $450.00 FIRM Call or text Jamie @ 262-914-4698