I have procharger,kooks longtubes,kooks x pipes, borla exhaust,kooks cats, and lots more. Well I failed airfare Colorado emissions 6 times so I ordered the new kooks green cats and had them welded in. I ran the car for 1 hour today to warm up the cats first and then went in very nervously. While waiting in the room I saw the driver in the red the whole time on the dyno rollers with the sniffed in exhaust. I was sure I failed, but was praying these cats actually work. Well the guy ran up shakes my hand and said congratulations you passed. I jumped up and down and ran back in the waiting room and high fived everone. Not only did I pass but with flying colors. I linked the last failed results on top and the new passed one after the kooks cats on the bottom.Wow, yeah their expensive but MSN they really work. Next week I go in for a new tune, so we'll see how they do. Also no codes either. I can't figure out how to post attachment to show results. I can facebook anyone the pics of the results difference of before and after cats.

 

Great news man. Say, can you post this in the Mountain section as we have a discussion going on cats and Clean Air Colorado. Thanks.

 

Excellent, glad to hear they are working well for you!

 

Colorado still uses rollers? Even in nearly communist NY we get to use the simple ODBII plugin test.

 

Do you have the sheet with all the numbers?

 

I have heard of good things when it comes to those green cats..

 

Yeah, I have to find all the old failed sheets but i'll have figure out how to attach on here. I have 1 before and 1 after cats in my phone photos. I also didn't mentioned I have a 3600 rpm stall and 373 gears, which I think both of those make passing rollers harder. I haven't gotten the new tune yet as I'm too broke right now, so I don't know if they affected my horsepower but my car feels the same and still no codes. The old high flow cats by kooks are crap and failed even with a gallon of denatured alcohol, but these passed by almost putting out zero emissions, I thought they were just hype, and I hadn't heard yet from any Colorado Corvette owners using them yet. I got them from Colorado speed, but I had to call kooks to find out what size would fit into my racing headers/ x pipe setup. Colorado speed doesn't have a clue what size, but they gave me the best price. It was still expensive but a lot cheaper than having a Corvette dealership order them for you. Have your local muffler shop weld them in, at $120. It's so much cheaper this way than having to hastle with detuning, and retuning and removing headers and getting addresses out of city and always making lies up to cops. Ya aircare Colorado is a scam but at least now we know there's hope. I want to see if someone can pass with a really agressive cam and these cats.