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Why not run cats, it is the law after all? Dual 3" high flow cats don't rob any power until you're way up there. If the car is loud, has tint or anything else that will get you pulled over, you just increased your chance of having the cops check for legal exhaust as well. It's probably 50/50 odds of getting checked. Is the penalty really worth it? I bought the TSP ORY and added dual 3" cats to it and the car runs fine and it keeps it a little quieter as well.
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69 Z28 JL8 4 wheel disc brakes - being restored
09 Silverado Z71
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