AlexJames Posted May 23, 2008 Share Posted May 23, 2008 Hey guys, Just a quick question for you all... I have brought the 1st de-cat pipe(from the engine) a while back and it seems to be about a 3" across, maybe more... I have just brought the 2nd de-cat pipe and its a 2 1/2" ... is that right? Im totally confused... Quote Link to comment Share on other sites More sharing options...
miko_supra Posted May 23, 2008 Share Posted May 23, 2008 yes there are usually either 2.5" decats available or 3". I have 3" on both of mine Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 23, 2008 Author Share Posted May 23, 2008 ok, this is still confusing... the 1st decat is almost 3, the second is 2.5 the HKS exhasts looks like it has a 4 bolt or 3 bolt 3" on it... this aint gonna work is it... Ill also attach a pic of a hole on the 1st decat pipe.. in a mo... Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 23, 2008 Share Posted May 23, 2008 AFAIK the 1st cat is different on a J-Spec to a UK - have you got the right one? Edit: Need pics really Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 23, 2008 Author Share Posted May 23, 2008 AFAIK the 1st cat is different on a J-Spec to a UK - have you got the right one? Edit: Need pics really That might be the problem. The first de-cat is def over 2 1/2, its almost at 3 and there is a hole where the exhaust comes near the centre of the car.. pics... Quote Link to comment Share on other sites More sharing options...
RobSheffield Posted May 23, 2008 Share Posted May 23, 2008 Ebay decat? Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 23, 2008 Author Share Posted May 23, 2008 yes.. Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 23, 2008 Share Posted May 23, 2008 From the pic that hole at the side is for the cat temp sensor Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 23, 2008 Author Share Posted May 23, 2008 makes sense, but if it fits, could I just not block it off? cause I have never seen a cat temp sensor or my j-spec, unless its hidden under a load of heat shielding thats already there!? Quote Link to comment Share on other sites More sharing options...
Guest Angry Koala Posted May 23, 2008 Share Posted May 23, 2008 Looks like you've got yourself a UK spec 1st decat there which won't fit a J spec whatever you do to it..... 2nd decat yes you could just block up the sensor hole (I have a J spec car with a UK spec 2nd decat with the hole blocked) but 1st decat, no sorry. Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 23, 2008 Author Share Posted May 23, 2008 Looks like you've got yourself a UK spec 1st decat there which won't fit a J spec whatever you do to it..... 2nd decat yes you could just block up the sensor hole (I have a J spec car with a UK spec 2nd decat with the hole blocked) but 1st decat, no sorry. Cheers for the, I may of confused you a little there though. The 1st decat (nearest the engine) has the hole in it) and is 3" 's The 2nd decat is 2 1/2 so I would imagine is a j-spec which will fit...? Quote Link to comment Share on other sites More sharing options...
R Black Posted May 24, 2008 Share Posted May 24, 2008 Is it like this one? As i have this and i could only assume it was yo fit the cat temp probe in or maybe a wideband?, but i have not seen a wideband that would mate to it. Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 27, 2008 Author Share Posted May 27, 2008 yeah its simela to that one but longer, in fact its way to long, I took it to a garage to have a propper look under it and its WAY to long, it must be for the UK spec. I will stop being cheap and just buy the other half of it from wifbitz lol Quote Link to comment Share on other sites More sharing options...
Dazzi Posted May 27, 2008 Share Posted May 27, 2008 yeah its simela to that one but longer, in fact its way to long, I took it to a garage to have a propper look under it and its WAY to long, it must be for the UK spec. I will stop being cheap and just buy the other half of it from wifbitz lol You might have a decat for the MKIII or even a second decat (long one). Where did you buy it from? Got a link? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 27, 2008 Share Posted May 27, 2008 You have a one piece UK spec cat pipe to remove BOTH cats and also a UK spec 2nd decat pipe to remove just the 2nd cat. The latter can be used on J-Spec cars, I can sell you a proper stainless steel adaptor to fit a removable bung over the hole with 2 studs sticking up, where the 2nd O2 sensor on a UK car would go. You can then either leave it blanked off with the bung, or use it to fit a wide band sensor for test purposes. i can also sell you the proper J-Spec 1st cat pipe to mate up with it, and the gaskets and a restrictor ring. If you are interested ring me, number below, thanks. Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 27, 2008 Author Share Posted May 27, 2008 cheers for the dude... payment on way Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 27, 2008 Share Posted May 27, 2008 No problem, glad to have helped sort it, cheers Alex. Quote Link to comment Share on other sites More sharing options...
Jellybean Posted May 27, 2008 Share Posted May 27, 2008 Hi Chris I have a Jspec Supra with both CATS, she has a CAT back Power House Amuse System on her; would the standard JSpec decats work or would you say somebody would need to take a look before getting decats PM me Price please both Decats and Restrictor Ring if they will fit? Can I measure from Downpipe to end of Second CAT to verify Standard Decats will work? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 27, 2008 Share Posted May 27, 2008 The pipes I sell will fit fine. All cat back commercial systems finish at the same point. I'll PM you some prices. Cheers. Quote Link to comment Share on other sites More sharing options...
AlexJames Posted May 30, 2008 Author Share Posted May 30, 2008 your making a mint outta this thread chris... any chance of commission? Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted May 30, 2008 Share Posted May 30, 2008 I wish I was, the margin in my cat pipes is pretty laughable, sadly. Thanks for the thumbs though Quote Link to comment Share on other sites More sharing options...
Guest BradMD Posted August 21, 2011 Share Posted August 21, 2011 hey chris, do you have any 2nd decat pipes 3" and how much? Also will it fit on the stock exhaust with no probs, its a 1994 N/A j-spec thanks Quote Link to comment Share on other sites More sharing options...
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