My experience:
1.) High flow cats sound better than no cats (stock headers and 2.5 Corsa).
2.) I notice a smell with the high flow cats (Sean Roe ovals) when driving aggressively. Cruising, nope. Now with no cats, I smelled the fumes from start to finish. Stock cats, never smelled anything.
1.) High flow cats sound better than no cats (stock headers and 2.5 Corsa).
2.) I notice a smell with the high flow cats (Sean Roe ovals) when driving aggressively. Cruising, nope. Now with no cats, I smelled the fumes from start to finish. Stock cats, never smelled anything.