Happily, designing turbochargers and other B to B products are a little easier because you have 5 OEMs that you sell to, and most of the end customers just don't care. The only issue is that no matter what you do the OEMs come back and tell you that the product is 30% more than your competitor, no matter that that "competitor" doesn't have a product that fits, handles the specificied requirements, or does any of the other 50 things that were "must haves".