supraman.chris Posted May 27, 2013 Share Posted May 27, 2013 Is there a link on here for a diagram representation of a complete front to back exhaust system including individual parts for an J-Spec '93 TT RZ? Trying to understand how many decats i need Link to comment Share on other sites More sharing options...
listy Posted May 27, 2013 Share Posted May 27, 2013 If you have a cat back exhaust system, then you need two. One for the cat that is under the car, and one that leads to the down pipe. Link to comment Share on other sites More sharing options...
mellonman Posted May 27, 2013 Share Posted May 27, 2013 2 decat cats mate every time, there is one that comes down as a down pipe and the one that goes flat along from near tge fro t to about the middle of the car Im very sure the links on the front home page will show in the repair manuals Link to comment Share on other sites More sharing options...
supraman.chris Posted May 27, 2013 Author Share Posted May 27, 2013 Cheers guys. Worth holding onto my cats for MOT's? Have a Nur Spec exhaust system. What are the benefits of the decats apart from exhaust flow? Link to comment Share on other sites More sharing options...
listy Posted May 27, 2013 Share Posted May 27, 2013 Better flow, and more noise If going double decat, make sure you get a restrictor ring in place, else you will over boost, and pop your turbos. Link to comment Share on other sites More sharing options...
mellonman Posted May 27, 2013 Share Posted May 27, 2013 You will need to replace the fuel pump also and get a restrictor ring to stop over boost, bpu please click on the bpu Link to comment Share on other sites More sharing options...
ballsdeep Posted May 27, 2013 Share Posted May 27, 2013 http://www.mkivsupra.net/vbb/showthread.php?289893-Whifbitz-2nd-decat-NA-TT Link to comment Share on other sites More sharing options...
supraman.chris Posted May 28, 2013 Author Share Posted May 28, 2013 Cheers for the plug 'Ballsdeep' lol. But that just confuses me further as why is that pipe section so long but both 1st and 2nd decats on garage Whifbitz look short wee things for a j-spec TT? Link to comment Share on other sites More sharing options...
Nic Posted May 28, 2013 Share Posted May 28, 2013 (edited) Left to right: 1st cat (different on NA and TT), 2nd cat, mid pipes, rear silencer box. Standard Exhaust http://img401.imageshack.us/img401/3961/picture1bb.jpg Edited May 28, 2013 by Nic (see edit history) Link to comment Share on other sites More sharing options...
Nic Posted May 28, 2013 Share Posted May 28, 2013 2JZGTE - Top: 1st stock cat Middle: aftermarket sports cat Bottom:1st decat pipe Top: Stock 2nd cat Bottom: 2nd decat pipe. Stock cat back exhaust - mid pipes and rear box http://www.turboimport.com/temp/supra_stock_exhaust.jpg Aftermarket cat back exhaust - mid pipe and rear box http://www.nicedeals.co.uk/exhausts/supra-exhaust-1b.gif Link to comment Share on other sites More sharing options...
Recommended Posts
Please sign in to comment
You will be able to leave a comment after signing in
Sign In Now