no difference in HP without cats ???
"I don't know if that holds true on the 03 Cobra's" ..but...
I was just thumbing through 5.0 last night and read the article on Bassani's new performance cats.. They ran dyno numbers on stock,perf cat and NO cats on a vortech late model modular (king of street winner from last month) the car had 500+ HP at start...
If I remember what I read last night, the NO cats dyno numbers were an average of an additional 5-9 hp over the performance cats at different RPMS with the mid range RPMS being the largest gains I think..
I'd take those gains all day long..