have done an eye-talian tune up during each work shift for the past week (once the engine has been running for at least 1 hr). is this being too hard on the motor if i do it 10 or 11 times? my procedure is to just drive around town for at least one minute with the car locked in first gear at 45 mph (yielding about 5200 rpm). it has netted me some extra power (and raised the pingband from 2100 rpm to 2300 rpm) but has yielded no additional mpg. the very strong chemical i've been running in the gas for the last 50 gallons or so has raised the pingband from 1700 to 2100, and gotten me an additional 1mpg in real BS proof stop and go (ie, 14.5 mpg to about 15.3), but no additional power. keep in mind that i'm not running synthetic right now, so that might factor into the "abrasive" value of the italian tuneup. thanks.