sun, mitsubishi casas do injector cleaning.my 97 galant vr underwent dis during its 40k km inspection.dis was way back in 2001.cost for labor for all 6 injectors cost P1600 while d parts (injector o-rings, injector baskets)-->duno wat dey are e, cost an additional P1k.honestly, i didn't feel any difference after d injectors wer cleaned.pareho pa rin ang takbo.cguro, mas cgurado lang ako na malinis yung injectors kac binuksan tlga.i also used d mitsu fuel cleaner,ganun din.wala rin akong naramdamang effect.advice na lang, dont fix it if it aint broke, plus u'll spare urself d extra cost :D