Hi, I'm booked in on saturday to have a custom exhaust fitted and am contemplating to have either complete system from turbo or just from the cat, as I don't know if this is going to cause any problems like over boosting or spiking. I have a DTUK box.

Has anyone done it? Or have any advice for me? Would love to have from Turbo.

Thanks
Si

ps it is an 09 sportive