[QUOTE=TestDrive;96390](My '99 2.0L has anti-knock sensors. My '93 & '94 1.9Ls don't.)QUOTE]
Pull that knock sensor plug off the sensor of the ZX2. It doesn't work righ and will randomly pull timing when you don't need it. It will pull 6 degrees without any incremental change and goes off all the time. It may not add mpg's or hp but it smooths out the power curve considerably and makes it a much more enjoyable car to drive. This is one of the first things I did to mine and the surge that I had been trying to find for years disappeared
BTW, there's lots of free type mods you can do to the ZX2 to make it more fun and enjoyable to drive. Of course I'm a ZX2 nut, so take what I say with a grain of salt
Of course you could wander over to Gassavers and see COZX2's ZX2 get over 100mpg to get some real bad ideas
