So to start I have the Ark Grip v2 catback (2.5in), with B6A lower downpipes (non resonated 3in) , the pipes I just had installed at a shop yesterday and a cel came on (p2096) after an hour and half of driving. The upper cat on the passenger side right before the flanges for the upper and lowers meet, has a noticeable gap in it. Anyway I’m going to hold the shop responsible on Monday for breaking my upper pipe. And I’m thinking about doing high flow cats for my uppers. Would it need tuned?