damn just drove my car a while ago. holy shit. that shit is kicking. i've been out to sea for 3 weeks and had the header installed while i was gone. i spoke to my boy and he said it was much faster. well i drove it today and there is a big difference. the only thing wrong w/ the no cat setup is that it's loud as shit and almost has a raspy sound. a little to ricer for me. but i'll be putting the silencer back on to see if that helps.