they do happen, it's inevitable. although i'm not arguing about the gains you can get from a turb charged engine. it's just not the type of system for a person that may be on a budget or have a limited amount of cashflow for keeping up with the maintenance for it. when i post something about the this subject, it's out of personal experience and not just talking out of my ass. i've owned a turbocharged engine vehicle in the past and know the pros and cons of it. knowing what i know now, it's just a pain to deal with really. n/a engines are reliable and simple. as far as vauum leaks go, turbo charged engines are affected the most from it, since it relies on the extra air for power. it's not fun having that issue when you're on the highway. yes silicone hoses "minimize" the issue, but doesn't get rid of it completely. and if you recall my previous posts, i mention the fact that if you're on a budget, then it's not the best option for you, otherwise go for it. all turbocharged cars suffer from lag, some may handle it better than others. check this video out