v8madmatt Posted January 8, 2012 Share Posted January 8, 2012 hi i have a 1996 land rover discovery 3.9 efi v8 i am wondering if its possible to fit a decat pipe to it without hurting the engine as the engine runs sweet i do want to fit a full system just wondering where the best place to get them from is thanks for any help Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted January 9, 2012 Share Posted January 9, 2012 Unless it has a lambda sensor after the cat, should be no problem removing the cat. You'll need to put it back at MOT time as per the new 2012 regs. Quote Link to comment Share on other sites More sharing options...
barriesheene Posted January 11, 2012 Share Posted January 11, 2012 Hi Matt. Just had a full stainless system done by lifelong on mine. I had from the y piece back done first, then went back and had the front y piece made up. This means you can just replace the new y piece with the original y piece/cat at mot time . O and I had twin exit, single rear pipes on mine with slash cut ends. Looks the mutts I'll post a pick if I get time. Quote Link to comment Share on other sites More sharing options...
Lemur Posted January 13, 2012 Share Posted January 13, 2012 Hi The cat is not for the engine, it couldn't care less. The cat is just to help burn gasses into carbon dioxide and make the exhausts less toxic for humans and animals. There might be an MOT problem with removal but it will not hurt the engine. (Not to be confused with removing the entire muffler and pipes, that could make the engine run bad due to pressureloss resulting in fuel/air escaping the cylinder before the exhaustvalves close. /Johan Quote Link to comment Share on other sites More sharing options...
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