Didn't realise that, definitely good to know. I'm not chasing massive power so the stock dumps will probably do for now. I'd be better off spending the extra $$$ on a hi-flow cat than new dumps.
Anyone have any knowledge of performance differences between cheaper front pipes (Blitz, JJR, HPI, OBX, etc.) compared to the higher-end pipes (Mines, HKS, Auto Staff, etc.)? Or is the extra cost solely due to material differences such as titanium over stainless or mild?