I just don't get it...Pimp Daddy Caddy: gas mileage with leaky injectors, plugged up cat, no tune up, and God knows what else was wrong with it: approx 17-18 MPH. Pimp Daddy Caddy: gas mileage with full tune up including new coil, new fuel injectors and fuel pressure regulator, new exhaust w/ new cat, new 02 sensor, fresh oil change and transmission service: 18 MPG. WTF? I mean I wasn't expecting it to get 40 MPG like a Honduh, but I expected it to at least get me back to the 20 MPG I used to get when I first got the car...