Wow, people really get their panties in knots about certian topics. Exhaust and intake mods certainly do increase FE in most vehicles, but being as most of these cars are newer, you will have a hard time finding many who have modified their cars at all (aside from accessory packages). Then there is always the other aspect of members not searching the archives for threads that might answer their questions. Paticipating in a forum online is always a Catch-22.

Alabaster Silver HcH