I haven't run an exhaust without a cat delete so I can't comment on the sound difference. I will say that there was no real difference on the sound of the black label exhaust between the 2.5inch P2R test pipe and the 2 inch T1R though.
thanks for the input. im good on buying a downpipe but thanks for the offer. an for making my own im not that good making something like that. im not advance for custom making of parts. im just waiting on aj to pm me back an im goin to get t1r downpipe