Yeah, we should start more "how does X work?" type threads---I guess the off-topic cars section would be the right place (?) I have to say that the "HowStuffWorks.com" website has has deteriorated quite a bit ever since the original guy running the place left. :frown5:
That is correct, there are also external wastegates that race-cars and some highly tuned street cars use that allow for more exhaust flow and better control of boost, or less boost creep. Example: How it's mounted: There's good writeups on just about everything if you want to go a little more advanced than howstuffworks at: AutoZine Technical School