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prob be aroud 220 - 240 bhp depending on if it is fully decated or not dump valve wont release any bhp. Sti bottom end is prob stronger but no different unless ecu is remapped.
prob be aroud 220 - 240 bhp depending on if it is fully decated or not dump valve wont release any bhp. Sti bottom end is prob stronger but no different unless ecu is remapped.
You need a full decat mate forget the chavvy dumpvalve am STi or Green panel filter and a suitable remap from either Bob Rawle, Powerstation, Andy F etc.
Bear in mind that when standard, your car will probably be well under the quoted power output because of its age. Your exhaust mod may only bring you back up to 205 bhp or whatever your standard output should be.