Well i have a friend who owns a 92 integra ls and lately he's been gettin shitty gas mileage... He has already tried cleanin his injectors, cleaned air filter.. Any help would b appreciated.. thnx

 

plugs, wires, cap, rotor, failing motor (ie. excesive milage, drop in compression, burning oil), change in driving habbits, weather, egr valve, engine mods, low tire pressure, new rims (ie. larger or smaller then stock), worn head or valves needing adjustment.
A ton of thing can cause your gas milage to go down and if its got a lot of miles, 150k+ the list will just get bigger.