lackie Posted February 12, 2004 Share Posted February 12, 2004 ive tried to do a search for this but came up with differing views and nothing concrete about what to do. im wanting to de-cat at the end of the month with new backbox etc, and wanted to know exactly what is needed to get the job done properly, including price and which ones, in your own opinion are the best. i was looking at the 5zigen cannonball anyone got one of these. any help gratefully appreciated and sorry if this topic has been raised before cheers Quote Link to comment Share on other sites More sharing options...
michael Posted February 12, 2004 Share Posted February 12, 2004 If it's a UK car then all you need is the decat pipes, exhaust and new gaskets - if it's a J-Spec you might want to add a restrictor ring to the shopping list to prevent the boost going too high. I opted for the Chris Wilson decat pipes, HKS gaskets and a Blitz NuR spec and I'm very happy... with that bit of the car anyway Quote Link to comment Share on other sites More sharing options...
outatime Posted February 12, 2004 Share Posted February 12, 2004 The choice of backbox is up to you, I got a SuperDrager2. For a full decat you'll need... Two decat pipes, one for each cat. Fuel Cut Defensor - TRL VFCC is the best A boost gauge to keep an eye on whats going on. A restrictor ring if your boost is too high (1.2bar+) Further down the line, you will need a friendly MOT tester or have to put a cat back in for your MOT. Quote Link to comment Share on other sites More sharing options...
Justin Posted February 12, 2004 Share Posted February 12, 2004 Exactly as Outatime said. All of the above for my car. Front cat out - Chris Wilson Downpipe Rear cat out - HKS mid pipe from Torque IC New Exhaust - Blitz Nur Spec Fuel Cut Defenser - TRL Restrictor ring - Chris Wilson £12 Boost Gauge - Take your pick I have a friendly MOT station too:) Quote Link to comment Share on other sites More sharing options...
dude Posted February 12, 2004 Share Posted February 12, 2004 Friendly MOT stations will soon be a thing of the past , as they get new software for their emmisions machines the loophole for performing the non cat test will be shut , i got mine within limits today by playing with the SAF-C !!! Dude:flame Dev Quote Link to comment Share on other sites More sharing options...
Aerotop Dave Posted February 12, 2004 Share Posted February 12, 2004 If you only take the front cat out... 1) Will it pass the MOT? 2) Will it do any damage? (I read somewhere about heat build up or something) 3) Do I still need to fit all the boost gauge/fuel cut cobblers? 4) Will I actually notice any difference? Quote Link to comment Share on other sites More sharing options...
Aerotop Dave Posted February 12, 2004 Share Posted February 12, 2004 Er... or do I want to take the back cat out? Quote Link to comment Share on other sites More sharing options...
outatime Posted February 13, 2004 Share Posted February 13, 2004 Originally posted by dude Friendly MOT stations will soon be a thing of the past Mine won't 200sx Boy: 1) Yes, no problem. Mine only just failed with no cats and a Superdrager2 2) No 3) I would, as soon as you start messing with boost a gauge is a must. One cat along with a backbox will require fuel cut. 4) Yeah, you will notice a difference, especially with an aftermarket backbox. Quote Link to comment Share on other sites More sharing options...
Chris Wilson Posted February 14, 2004 Share Posted February 14, 2004 Originally posted by lackie ive tried to do a search for this but came up with differing views and nothing concrete about what to do. im wanting to de-cat at the end of the month with new backbox etc, and wanted to know exactly what is needed to get the job done properly, including price and which ones, in your own opinion are the best. i was looking at the 5zigen cannonball anyone got one of these. any help gratefully appreciated and sorry if this topic has been raised before cheers My wife took 4 5Zigen boxes to the tip today, they seem to rot out for fun. I would be wary of their longevity. You need my 2 cat pipes, and whatever cat back aftermarket system you prefer. With my 2 pipes you probably won't get boost creep, but if it goes over 1.2 bar a restrictor ring can be supplied to your door that will fetch it down to 1.2 bar, for 17 quid all in. E-mail m direct (not a PM please..) and i can send full info re the cat pipes. i have stock. Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 14, 2004 Share Posted February 14, 2004 Nevermind... Quote Link to comment Share on other sites More sharing options...
dude Posted February 14, 2004 Share Posted February 14, 2004 Originally posted by outatime Mine won't 200sx Boy: 1) Yes, no problem. Mine only just failed with no cats and a Superdrager2 2) No 3) I would, as soon as you start messing with boost a gauge is a must. One cat along with a backbox will require fuel cut. 4) Yeah, you will notice a difference, especially with an aftermarket backbox. If yours failed then no matter how friendly the MOT station they wont be able to do a friendly MOT unless they are willing to emission test a different car and if they are caught doing that its Bye Bye MOT license , the new software lists J-spec engine numbers and therfore they have to carry out a cat test , any stations with older equipment can still do a non cat test if they know what they are doing !!!. Pretty soon the MOTsystem will change and it will not be possible to get a friendly MOT as it will basically be done on line with prompts from a wrist mounted PC , this also means that the Ministry (MOT police) can be sitting round the corner and know excactly what has just been tested ie steering , they can then appear and check the item just passed/failed and the tester cannot do anything because he has just passed/failed it on line , so boys and girls keep those cats or buy a stand alone or AFC !!!! Dude:flame Dev Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted February 14, 2004 Share Posted February 14, 2004 how do you tune an AFC to pass an emmision test??? Say for instance the Apexi S-AFCII (Dude you have this model?) You would need two settings yes? as emmisions testing is done at Idle and at 2500-3000 right? Scott PS, "Hijack mode on" By the way dude, that guy took £6500 for his supe at the jag dealer! Snatched his hand off. Its now up for sale on a used forecourt in leicester for £9500!!!!!! I told him to contact you but he knew best! "Hijack mode off" Sorry all:( Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 14, 2004 Share Posted February 14, 2004 We do both 2.5" and 3" UK or J-spec pipes. The 3" have lovely smooth bend in them unlike the 2.5" ones which have 2 large degree bends in em - much more restrictive. Gaz. Quote Link to comment Share on other sites More sharing options...
dude Posted February 14, 2004 Share Posted February 14, 2004 Originally posted by veilsideTT how do you tune an AFC to pass an emmision test??? Say for instance the Apexi S-AFCII (Dude you have this model?) You would need two settings yes? as emmisions testing is done at Idle and at 2500-3000 right? Scott PS, "Hijack mode on" By the way dude, that guy took £6500 for his supe at the jag dealer! Snatched his hand off. Its now up for sale on a used forecourt in leicester for £9500!!!!!! I told him to contact you but he knew best! "Hijack mode off" Sorry all:( Well this is where you need a sensible tester , if he says there is no way of recording engine speed you can do it at whatever revs you want , i found 2000 to be good , reduce the % on the low throttle setting and try to use as little throttle as poss to keep up the revs , oh and remember to put it back where it was before you thrash it up the road Dude:flame Dev Quote Link to comment Share on other sites More sharing options...
veilsideTT Posted February 15, 2004 Share Posted February 15, 2004 cheers for clearing that up for me dude. Quote Link to comment Share on other sites More sharing options...
dangerous brain Posted February 17, 2004 Share Posted February 17, 2004 Ok So what would I need to de-cat my rudely underpowered N/A ??? Poor car needs all the power it can squeeze lol. Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 17, 2004 Share Posted February 17, 2004 Originally posted by dangerous brain Ok So what would I need to de-cat my rudely underpowered N/A ??? Poor car needs all the power it can squeeze lol. De-cat pipes for an NA You would also get more power/noise from a exhaust too if you haven't got one Drop me a email or PM if you want us to sort you out Dangerous Gaz. Quote Link to comment Share on other sites More sharing options...
lackie Posted February 17, 2004 Author Share Posted February 17, 2004 gaz could you give me a quote on ecerything i would need for a full decat on my tt manual including postage/delivery ps i want the one that sounds the loudest i also have the hks induction kit what would i need to have the proper kit ie cold air box and any other piping other than the sad plastic stuff. Quote Link to comment Share on other sites More sharing options...
Gaz Walker Posted February 17, 2004 Share Posted February 17, 2004 Done - check your PM Quote Link to comment Share on other sites More sharing options...
paul_y3k Posted February 17, 2004 Share Posted February 17, 2004 gaz can you do the same for me too please. (ppstt and wheres me rad lol) Quote Link to comment Share on other sites More sharing options...
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