Would using back too back treatments, of the new crc gdi intake cleaner, be jsut as good as removing the intake manifold and manualy cleaning, with lets say, carb cleaner? I know walnut blasting is the best, seen many pics, youtube vids. I dont have all that stuff. I have a 98 corolla, 84,000 miles on it, and never removed the intake manifold. I dont think ithas na EGR, but think it has some kinda egr solenoid or something. I am aware the cost, autozone has it for like $13 a can! IM asuming, the valves must be a mess. Though i am having good mileage. I average 176 miles before gas gauge goes below quarter a tank. THats when it gets eaten up pretty fast too empty. Using MMO, sometimes, not all the time, i can go as far as 195 miles. But i use 5-6 ozs. for 8 gallons of shell 87 put in. That fills the tank at quarter a tank. LAst year i ued walmart tcw3, 1 oz per 5 gallons, put 3 ozs in, i was able to go 230 miles! on a tank. Lots of stop n go traffic here. anyhoo...does anyone think if i bought liqui molly intake cleaner, the can with the hose thatgoes into the air duct, or crc intake cleaner, lets say i dunno 3-5 times, in a row, or over the course of a week, would that do just as good as manualy cleaning?