While the quality is good, this company doesn’t have a lot of experience in the performance industry. Apparently it was a pain to tune properly and the data sheets were incomplete. It took a few months of driving and pushing them to work out the kinks but I finally have. They run great now and perform well, but when or if I finally decide to get off the stock turbo, I’m probably going to spend the extra $$ and switch to a more well known brand with better tuning data. In my opinion, spend the extra money, don’t skimp out like me. That said I’m glad I’ve tested them to let people know how they run and what tuners think of them. Again, not terrible, but not great either.