About: http://webisa.webdatacommons.org/76695066

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	the first mod i did was an intake and like you i noticed a drop in milage to my suprise, but after that i added an exhaust and it seemed to level out and slightly increase
http://www.w3.org/ns/prov#wasQuotedFrom	powerstroke.org