Quote: Originally Posted by
want2race 
Can I ask a dumb nooB question...
If using a windshield washer fluid as the injected liquid, how would this affect fuel economy? the previous posts have stated that these injection techniques are good for fuel economy. I would like to know how? And does that fuel economy improvement apply to non-turboed cars as well? I would assume it should, since the fluid is being injected into the air intake path...
Maybe I am just stupid.
Dude you're only injecting when the car is at full throttle so who cares about fuel economy? You would only see better fuel economy at WOT because the water injection allows you to run leaner mixtures without detonation because of the higher octane, leaner = less fuel.