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Thinking of getting a Piper Exhaust for my 1.4rt. Was just wondering if these are any good, and also, will the ecu need to be adjusted as im getting a new filter element (prolly K&N) at the same time.
Thanks
ive got the piper 4" slashed cut exhaust system on mine and its good mate , get lots of popping and back firing on rev down.. hehe thats with the de-cat pipe also.