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Yes the car is definitely louder, by about 20-30% I would say. There no drone as it retains all the characteristics of the stock exhaust but it does wake it all up.
There's definitely an improvement in the mid and top end power with the downpipe, but yes a tune is needed if you're seeking a dramatic increase in power.
With a downpipe, you can usually skip stage 1 and go for a stage 2 tune.
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