I seem to have seen articles on these in US hot-rod magazines, basically they enable you to adjust wastegate (or blow off valve) to regulate the level of boost; useful for competition purposes, I ...

It's interesting to note that while turbocharging an engine seems to be the latest and greatest method of forced induction, the concept is actually quite old, having been in practice for nearly 100 ...

Expectation can be a dangerous thing, especially with tuning. We admit we had high expectations for Project Mazdaspeed Protege, as we had it serviced at Mazda's Tech Center. The service included the ...