[HondaCivic4358]

i understand. i am learning as i go. my friend knows everything to know about turbos and his whole family has mercedes. he is in th process of puting a t28 on his. he is going to do most of the work. im just curious, if turbos are so hard, why are they considered a bolt on? obviously its because they bolt right on, and its pretty self explanatory. im not disagreeing, im just saying that the bolt on part should be pretty easy, the ecu and boost control will be harder, but he knows what he's doing. how would i make this "homemade" boost controller?