Guest Jason1 Posted May 12, 2014 Share Posted May 12, 2014 Hi I am thinking of just decatting the 2nd cat, and upgrading the exhaust from there back My car has a sports cat in the 1st cat, would there be any advantage to do this or would I be better ditching the lot and go complete decat? I am not looking for massive power I would just like a bit more oomph 2nd decat pipes are very reasonable at the minute and there are a few cat back systems around also Hence the question, looking at a 3" system Many thanks Quote Link to comment Share on other sites More sharing options...
jamesmark Posted May 12, 2014 Share Posted May 12, 2014 What car do you have an NA or TT? For an NA you might get a smoother power delivery, and maybe 5bhp. For a TT you will no doubt have to get all the supporting mods to go bpu. Do a search as been done to absolute death. Quote Link to comment Share on other sites More sharing options...
Guest Jason1 Posted May 12, 2014 Share Posted May 12, 2014 Sorry yes it is a TT auto I will do a search on it Thanks Quote Link to comment Share on other sites More sharing options...
jamesmark Posted May 12, 2014 Share Posted May 12, 2014 Sorry yes it is a TT auto I will do a search on it Thanks I am not that up on sports cats and if that will be enough to prevent over boost or hitting fuel cut. But if you were to go double decat, you would need a fcd, restrictor ring maybe 1 bar, change of sparks plugs. The nice to haves after that are boost controller to raise the boost past 1 bar no more than 1.2 on stock turbos and a boost gauge blah blah blah, list goes on an on. However, if you are not wanting a lot of gain, then hopefully you can find if sports cat is enough on 2nd decat Quote Link to comment Share on other sites More sharing options...
Guest Jason1 Posted May 13, 2014 Share Posted May 13, 2014 Many thanks I was going to leave the first cat ( sports cat) decat the 2nd, fit a decent 3" system from here back and get a electronic boost controller and then push to 1 bar. But turn the gain up and so hopefully bring the turbos in earlier. As stated I am not after massive power ( well maybe later lol ) but just a decent pull from the car. Thanks Quote Link to comment Share on other sites More sharing options...
gordy.r Posted May 13, 2014 Share Posted May 13, 2014 I've just been reading up all about this tonight, all the info is in the FAQ's and Stickies in the guides, really helpful stuff and tells you about overboosting etc when de-catting the TT. Quote Link to comment Share on other sites More sharing options...
gordy.r Posted May 13, 2014 Share Posted May 13, 2014 http://www.mkivsupra.net/vbb/showthread.php?35944-Decat There you go Quote Link to comment Share on other sites More sharing options...
Guest Jason1 Posted May 14, 2014 Share Posted May 14, 2014 http://www.mkivsupra.net/vbb/showthread.php?35944-Decat There you go Many thanks I shall read through it tonight Thanks for all the help. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.