the power save rc8 filters were my favorite when i ran the rc8, i also used them on my jammin and mugen when i had those, if i could fit them on the losi 8ight i would have put them on there as well, u just made a mistake, its a bummer but just buy a new engine and learn from it,we have all done something wrong when we were first getting into the hobby from inexperience, its part of the learning curve, im betting that you wont make that mistake again, most likely from here on out you will have the cleanest air filter at the race track