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shiv's procede v2.0 put down 376 to the wheels thats with his cat back and 405wtq.. when i replaced my downpipe and went catless on my sti and got it tuned i gained close to 26whp more. then just stock with a tune.. and the bmw downpipes are much more restrictive then my sti's, just take a look there right off the turbos.. its like a bottleneck..
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