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I live in California and I want to free up some exhaust flow on my mkiv but still conform with all smog and emissions laws. I currently have a HKS Super Drager exhaust and I pass smog no problem. Is Random Tech's bolt on hi-flow CAT any good? Any ground clearance issues or other issues to worry about? Or is it a worry free bolt in piece? Does it yield any type of boost increase? How easily does it pass emissions? Is it barely getting by the emissions test or still passing well within the limit?

Also, how much power increase did you get with your Random Tech hi flow CAT installed? Was it worth the money? I'm debating whether it's worth the money to get a Random Tech CAT. Appreciate any responses.
 
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