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>From: Jay Parnell <jay.parnell@gecm.com> >Does anyone have any snappy suggestions for improving my MPG? I have a 1600 injection >fastback, and I am getting what seems to be ridiculously low mileage from it.. about >17 mpg on motorways, and 10mpg urban. >It has been suggested that it could have something to do with the injection unit? The >engine has been tuned using a krypton machine, so it cant be a tuning problem.. I have no idea what a "Krypton" machine is, but I suggest that you just make sure the dwell, timing, and valve clearance are all correct. Then check the compression. Verify that the system voltage is 14.1-14.4 V at medium RPM, otherwise replace the voltage regulator with genuine Bosch. Low voltage makes the D-Jetronix run rich, so this would be my first bet. Of course you should verify that all the FI wires are connected to the right things. And Toby's suggestion that this might be a pressure regulator problem, well, more likely it would be just a misadjusted pressure regulator. I've never seen one of these go bad, but I HAVE seen them abused by the practiconers (sp?) of the Sophomore Theorem. You know the Sophomore theorem: "If some is good, more is better." Apply it to anything you like--torque, children, beer, displacement, sleep, fuel pressure, exercise, computers.... Let us know what you find out. Jim