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Hey guys and gals. I’ve been running long tubes with catless mids from pacesetter for some time now and I think it’s time to put some high flow cats back in. Here in jersey it’s super annoying to get the car “inspected” without cats. I’m over it and wanna have a fully legal car again. So I plan on welding in 3” high flow cats into my existing pacesetters. My questions are:
1. Which cats do you recommend for a stockish car. Just otrcai intake, long tubes, exhaust, and a dyno tune from CSP.
2. Will I need a re-tune after I put the cats in?

thanks guys.
 

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I used these and have passed NJ inspection 2 or 3 times.
Flowmaster 2230130 223 Series 3" Inlet/Outlet Universal Catalytic Converter
 
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