I have been thing about going big turbo lately and have been wondering if anyone has had success passing emissions testing with a BT and a catted DP. I currently have a Cobb DP and defouler sitting around and I am waiting until next spring to put it on so I don't have to potentially change it out mid winter for inspection. I have done a bit of googling but nothing specific comes up. Any thoughts?
Emissions Readiness w/ Big Turbo
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The turbo has NOTHING to do with emissions. The downpipe would. A highflow catted unit is a good start, get that thing good and warm before testing to reach it's maximum efficiency. Basically do a bunch of WOT pulls before you get there on the highway. Drive like an angry right wing nut against the government, that has to go to a state inspection that day... 
The defouler is extra insurance, and frankly not needed IMO. But cheap insurance nonetheless.
The tune has EVERYTHING (or at least 98%) of what you need. Your tuner has to make sure that the correct settings are made so that you're not constantly in a "not ready," state. You have to drive so many cycles of start stop, cruise, etc to get out of the not ready state. So don't go and reset your car or unflash it right before your inspection.
Otherwise, there is nothing special about this process. Now if you lived in CA.. This may be a different story. But then again, they don't test new cars.
The defouler is extra insurance, and frankly not needed IMO. But cheap insurance nonetheless. The tune has EVERYTHING (or at least 98%) of what you need. Your tuner has to make sure that the correct settings are made so that you're not constantly in a "not ready," state. You have to drive so many cycles of start stop, cruise, etc to get out of the not ready state. So don't go and reset your car or unflash it right before your inspection.
Otherwise, there is nothing special about this process. Now if you lived in CA.. This may be a different story. But then again, they don't test new cars.
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?
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