If you do not have oxygen sensors your system will run in open loop mode and you'll notice poor gas mileage due to rich conditions. Why don't you have any?
------------------
Blueneonman - '95 5.0L Mustang GT Convertible | K&N Custom Cold Air Intake | FMS 9mm Wires | Hollow Cats | Flowmaster 2 Chambers | BBK Subframes | 6-pt Rollcage | King Cobra Clutch | FMS Adjustable Clutch Cable | B&M Short Throw | Coolest Neon Lighting on a Mustang EVER!
Homepage:
http://www16.brinkster.com/blueneonman/
AOL IM: blueneonman
Best time: 14.578
Best MPH: 96.20
Best 60': 2.23