I am currently looking for an upgrade for my pirelli. I don't track it but I don't drive it soft either. So, I know that the factory turbo back exhaust is not really good with the airflow and might overheat/overwork the turbo. And if i've done that, do I need high-flow cats? or some other SOFTER alternatives? I'm not into serious performance, just better flow for my blocked-up pirelli..
Some advice will be great!

Some advice will be great!

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