Samurai446 Posted March 16, 2005 Share Posted March 16, 2005 Hi all. Im about to have both cats removed on my 95 j-spec tt. Im a little lost with reading about all the sensors and restrictor rings. Can someone give me a quick explanation to what i need to do? Cheers Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted March 16, 2005 Share Posted March 16, 2005 Hi all. Im about to have both cats removed on my 95 j-spec tt. Im a little lost with reading about all the sensors and restrictor rings. Can someone give me a quick explanation to what i need to do? Cheers Just keep an eye on your boost.....with no restriction you might get over boosting with no back pressure and need to get a restrictor ring, talk to Chris Wilson on here. not sure what you mean about the sensor thing.......best of waiting for one of the other guys, they might know what you mean. Quote Link to comment Share on other sites More sharing options...
merckx Posted March 16, 2005 Share Posted March 16, 2005 Buy two decat pipes to replace the two cats, you can put the rear cat back on for MOT time. Removing both cats can cause the boost to go too high, to keep it down to approx 1.2 bar max you'll have to fit a restrictor ring. It's basically a thin plate that will fit between the last decat pipe and your exhaust and has an aperture slightly smaller than the exhaust. Get the decat pipes and restrictor ring from Chris Wilson. Most on here run there stock turbos upto 1.2 bar, you'll have to fit a boost gauge to keep a check on this. You'll also need a FCD (fuel cut defender) to prevent the fuel being cut off, get a TRL one. You also need to get some colder spark plugs. Also recommended to get a Walbro 342 fuel pump. Quote Link to comment Share on other sites More sharing options...
mikyrc Posted March 16, 2005 Share Posted March 16, 2005 If you put a Manual Boost controller or Electronic Boost Controller, then you don't need those exhaust rings, don't? As you then, can control the boost as desired, or am i wrong? Quote Link to comment Share on other sites More sharing options...
mikeyb10supra Posted March 16, 2005 Share Posted March 16, 2005 If you put a Manual Boost controller or Electronic Boost Controller, then you don't need those exhaust rings, don't? As you then, can control the boost as desired, or am i wrong? The boost controller only raises boost matey........think you will still need a ring I thought the same as you a while back but was told otherwise Quote Link to comment Share on other sites More sharing options...
Aerotop Dave Posted March 16, 2005 Share Posted March 16, 2005 Buy two decat pipes to replace the two cats, you can put the rear cat back on for MOT time. Removing both cats can cause the boost to go too high, to keep it down to approx 1.2 bar max you'll have to fit a restrictor ring. It's basically a thin plate that will fit between the last decat pipe and your exhaust and has an aperture slightly smaller than the exhaust. Get the decat pipes and restrictor ring from Chris Wilson. Most on here run there stock turbos upto 1.2 bar, you'll have to fit a boost gauge to keep a check on this. You'll also need a FCD (fuel cut defender) to prevent the fuel being cut off, get a TRL one. You also need to get some colder spark plugs. Also recommended to get a Walbro 342 fuel pump. Perfect answer Quote Link to comment Share on other sites More sharing options...
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