Glosphil Posted May 29, 2007 Share Posted May 29, 2007 Since removing the big cat, the 2nd tubby seems to come in earlier, around 3500rpm and is much smoother. No big kick around 4000 that I had before. Any ideas? is it normal? Its making over 1bar now without that cat in. Still pulls well, just no kick, more a steady surge. Thanks Quote Link to comment Share on other sites More sharing options...
wkdtime Posted May 29, 2007 Share Posted May 29, 2007 Yup, it's normal, less back pressure, less restrictive = Quicker spool up:) Although, you should still get a pretty big kick when numero 2 starts singing, it's alot more noticeable when both cats are out and when the boost is at 1.2 Bar. Quote Link to comment Share on other sites More sharing options...
Konrad Posted May 29, 2007 Share Posted May 29, 2007 Did you put restrictor ring? Quote Link to comment Share on other sites More sharing options...
wkdtime Posted May 29, 2007 Share Posted May 29, 2007 Did you put restrictor ring? You would not need one on a single decat. Quote Link to comment Share on other sites More sharing options...
Glosphil Posted May 29, 2007 Author Share Posted May 29, 2007 No, dont need it. I've got one though ready for when I take the other cat off. Quote Link to comment Share on other sites More sharing options...
Konrad Posted May 29, 2007 Share Posted May 29, 2007 I'm sorry, I missread, - tought you removed first some time ago and now removed second one Quote Link to comment Share on other sites More sharing options...
Daston Posted May 29, 2007 Share Posted May 29, 2007 both my cats are out and yet I still get the big kick at 4000 Quote Link to comment Share on other sites More sharing options...
leelbuk Posted May 30, 2007 Share Posted May 30, 2007 I get a massive kick at 3800-4000 when 2nd comes in - always makes me lose grip if I have my foot even slightly pushed down too far, so traction control is always off!! Also, the exhaust note is noticibly different - its louder, sportier and has more of a "whooshing" sound. I went from 1bar to 1.2 and thought that it would be just a little faster but boy was I wromg!! Much much faster!! Quote Link to comment Share on other sites More sharing options...
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