Quote:
Originally Posted by Teppka
And would changing headers + tune eliminate the torque dip completely? I read controversial opinions, some say it will, some it will not. Also cat vs castles, something I don't really get. If bought with cat, assuming it's an aftermarket product can it malfunction in future? In my country I will pass emission tests without cst just fine.
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Don't think so deep into it. Is "looking at a graph with an eliminated torque dip" what you're looking for? Or are you just looking for a nice improvement in driving and power? A simple answer is, it more or less eliminates the dip - at least it FEELS like it does, and that's all that should matter to you.
Yes, ALL cats can malfunction over time, no cat lasts forever. Cat-less is the better way to go if your emission rules allow it or you can get past it, as there will be a little more power to gain.