Cats
17 May 2003, 04:56 PM
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Can anyone answer me about which Cat does what and which one can i remove and still be legal. Ive got a WRX 97 which has two Cats fitted, ive had conflicting info. over which one i can remove to have the best power gain versus legality? Some have said the first cat at the down pipe is just a pre-cat, with some saying its the second one? Please can someone advise?
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