Good Lord....every single time Catch cans get discussed on here the same exact points are raised. I happen to agree with @Jacoby that they work. It doesn’t matter to me one bit if you don’t want to run one or not, it’s your truck, do as you please. If someone asks I’ll give an opinion, as for what the OP asked for, I stated as far as I know a K2 specific study does not exist. Doesn’t matter to me because like I said...don’t need to rub poison oak all over my face to know I’m gonna start itching soon. Damn man we even have Pro-catch can people arguing about WHERE to mount them. There is no winning on this topic and there never will be. The fact that Toyota and Ford both use a dual injector system and that GM has developed an internal system that dumps back into the crank case should tell you something. I’m not gonna tell you to buy one, I don’t sell them. But in a good faith attempt at trying to give the best advise AS I BELIEVE, then I’m going to recommend using one.