funny thing happen today. I had my apex avc-r and S-AFC2 put in last week and always run it at off settings (running stock). The guy that installed it for me said running 40 % more boost should be fine with stock engine although not to run it all the time. Just when needed to. Well i wanted to show my uncle the point of a controller (he is into classic ford pickups) and i took him with the boost and OH MY GOSH!! The 40% boost is felt and my BOV screams alot louder (hehe) but we gunned it by a park and not realizing there were BBQ's going on i smelled it as we passed and i freaked thinking i fried my turbo or something. I pulled over to open hood and smelled the engine to see if it was coming from there, but it wasnt coming from there at all (just super cautious since im stock). I thought it was funny but main question is to other boost controller people out there. I was toldl 40% was fine but whats other peoples opinions for the time being? I shall upgrade fuel injectors soon to 550CC's.