Headers , Exhaust and emisions in Colorado

[4-cam]

I decided to start a new thread as I start my journey with Mods and emissions in Colorado.
I decided to go with my own version of the FBI Dynomax setup. I just finished fitting and welding it together. I installed V-band clamps just ahead of the rear mount for easy removal. I did not go with the NPP setup yet as the ones I found available were a small fortune. I am using clamps on the tips so the NPP setup will be a future mod. I also want to investigate using an electric valve and switch instead of the vacuum operated system.
In Colorado we have to keep the emissions equipment intact with the AIR system in place, Cats and pass the IM240 treadmill test. I went with Stainless Works performance connect headers and added air tubes so the stock air system should bolt right up. These are currently being coated. I should have them back next week for installation. With the purchase of the headers from the group buy last summer , I also ordered SW high flow Cats. Thru others experience on this board, I was advised that there is no way it would pass emissions with those Cats. I decided to first install a set of Universal OBDII compliant Magnaflow Cats for the initial emissions test along with the stock tune. These are 400 CPI, not 200 CPI like SW and are suppose to have more Heavy Metal in them than the std high flow universal cat. Along with Being 5" dia. vs the 4" SW. I will wrap the Cats to keep them hot and as active as possible. I'm hoping this, along with the stock tune will get me thru the initial emissions test. In Colorado, if you have an active emissions sticker when the car turns 25 years old, then you no longer need further emisions. If this works out,it will be my last emissions test, then I will install the SW cats and work on the Tune for optimum performance.