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the major choking points are the primary cats, biggest gains in exhaust system will be seen by switching to catless downpipes. I'd imagine on the 135 we'd see maybe a 15whp gain with this exhaust. You don't buy an exhaust for power on these cars, everyone should know that by now.
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Originally Posted by djkrajzi
Mr nice doesn't play nice. But I guess he has a very fast car
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