Doubting I can bring myself to go expensive first off engine wise, in case I screw up! With that in mind from Reading around the NN21R and Sirio CL3 seem good options, how murdered will I get by the quickest cars if I use one if these? Is one clearly better than the other?
Who may stock the sirio 2013 pipe, can't find them in many places?
Chris, what made you go for the Jammin pipe?
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