All good info, and we are on the same page that the turbo has nothing to do with emissions. I guess to go a little more in depth however, I assumed that the greater exhaust airflow due to a larger turbo would make it more difficult to set some of our more sensitive monitors (catalyst and O2 sensors). What it sounds like though is that if I can get them to ready with my new downpipe I should not have a problem getting them to ready with a larger turbo as well?