They are as reliable as you make them, if you dont maintain them then they will goto shit just as if you dont maintain your car. Most blower companies have a maintenance schedule for their blowers, follow them. If you have the ability to check your tune on a regular scedule then do so. Change plugs more often, boost is hard on plugs. Change your oil and use a quality oil, dont use any fish oil internet crap. A lot of blower companies are offereing 3 year warranties now, but you have to follow their steps and have proof.