I have a topspeed 3" straight through exhaust and an Apexi N1 dual. I like the sound and looks better from the N1 but the performance with the SR should be better from the Topspeed single. I think the piping is only 2.75 on the N1 dual and my question is if I stay with the N1 dual how much power am I sacrificing and how bad would teh topspeed 3" be on the KA? <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/cry.gif" border="0" valign="absmiddle" alt='

'> Thanks, and no I won't sell the N1 dual I have 2 s14's and need 2 exhausts.