Scott Posted November 15, 2010 Share Posted November 15, 2010 That is not correct. Every MOT tester I have asked in the last 2 weeks....and I have asked a lot! say it goes on engine number not car model, so if its a 2JZ-GTE there is an exact match and it needs a cat to pass. If it is an NA it will be a 2JZ-GT, no match, so it will pass. I am sure there will be MOT testers backing me up on this very shortly If you check out notes 5 and 6 it mentions that it must match the engine code AND the Vin number.... which it won't. Makes no odds to me as my car is a 1996 though Quote Link to comment Share on other sites More sharing options...
2soops Posted November 15, 2010 Share Posted November 15, 2010 On a similar but slightly different note, is it just turbo cars which benefit from decat, or does it apply to n/a models as well Quote Link to comment Share on other sites More sharing options...
jackso11 Posted November 15, 2010 Author Share Posted November 15, 2010 n/a's will benifit from a decat. From what I understand they get very loud too, louder than TTs do. Not sure why that is though. Quote Link to comment Share on other sites More sharing options...
jackso11 Posted November 15, 2010 Author Share Posted November 15, 2010 If you check out notes 5 and 6 it mentions that it must match the engine code AND the Vin number.... which it won't. Makes no odds to me as my car is a 1996 though If that is true then my car should get through with no problems as its a 1994. Can any MOT tester on here confirm if that is the case? Quote Link to comment Share on other sites More sharing options...
Tricky-Ricky Posted November 15, 2010 Share Posted November 15, 2010 n/a's will benefit from a decat. From what I understand they get very loud too, louder than TTs do. Not sure why that is though. Yes N/A will benefit depending on its configuration and type of exhaust,but its a very small gain maybe 3-10BHP, the reason they are louder, is because they don't have a turbine in the exhaust flow to dampen the exhaust note. Quote Link to comment Share on other sites More sharing options...
danhicks22 Posted November 15, 2010 Share Posted November 15, 2010 I had a high flow cat fitted last year when I made the move to BPU. The cat itself cost about £220 IIRC - it was fitted by a garage who used the same one on their race car when they introduced restrictions in the series they raced in. That was a 700bhp+ Evo. My cat is fitted in the middle of a custom second decat pipe. I still need a restrictor ring as I was overboosting to around 1.35bar when it was first fitted without one. Quote Link to comment Share on other sites More sharing options...
jackso11 Posted November 15, 2010 Author Share Posted November 15, 2010 (edited) I guess you can fit them and still increase power, but fitting a sports cat will result in reduced power compared to if there was no cat at all. If you run 1.2 bar boost with a double decat would the power still be the same as 1.2 bar boost with a sports cat? or would it knock of bhp even though you are running up to the same boost? I don't understand why some people seem to be able to get their car through with no cats (TT) and others don't. How can some testers do the no cat test and others say cats are needed? Edited November 15, 2010 by jackso11 (see edit history) Quote Link to comment Share on other sites More sharing options...
SUPRALOOPY Posted November 15, 2010 Share Posted November 15, 2010 As you have already said, It's not you that gets the sh1te it's the station. If it was your MOT station would you want the hassle of VOSA all over you because some ricer took his cats out?? Its the test station just keeping VOSA away that's all. Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted November 15, 2010 Share Posted November 15, 2010 As you have already said, It's not you that gets the sh1te it's the station. If it was your MOT station would you want the hassle of VOSA all over you because some ricer took his cats out?? Its the test station just keeping VOSA away that's all. exactly and we can easily lose our license. Quote Link to comment Share on other sites More sharing options...
Swampy442 Posted November 15, 2010 Share Posted November 15, 2010 I guess you can fit them and still increase power, but fitting a sports cat will result in reduced power compared to if there was no cat at all. If you run 1.2 bar boost with a double decat would the power still be the same as 1.2 bar boost with a sports cat? or would it knock of bhp even though you are running up to the same boost? I don't understand why some people seem to be able to get their car through with no cats (TT) and others don't. How can some testers do the no cat test and others say cats are needed? You will lose power if you stick a restriction in the exhaust, compared to unrestricted. And as for pass/no pass, any modern well maitained injection engine should have no probs passing an MOT. A Soarer I used to own passed with no cats and a smoking turbo lol Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted November 15, 2010 Share Posted November 15, 2010 not at all, we have done a few for club members and atleast 1 cat will get the car through, otherwise they wont go through but thats ony from my exspirience on ones i have done. and the ministry pop up when they like Quote Link to comment Share on other sites More sharing options...
jackso11 Posted November 15, 2010 Author Share Posted November 15, 2010 so this rule http://www.motuk.co.uk/images/7.3page9.pdf pasted earlier, doesn't that work as the VIN numbers don't come up with an exact match? for pre 1995 cars I mean Quote Link to comment Share on other sites More sharing options...
AndrewOW Posted November 15, 2010 Share Posted November 15, 2010 To be fair on my 'friendly' MOT testing station, I do always take my second cat pipe to the garage, so if they need to swap it over for the test, then it's all above board on the day, and I take the risk from there on. I wouldn't want any garage losing their licence for taking those sorts of risks. Quote Link to comment Share on other sites More sharing options...
jackso11 Posted November 15, 2010 Author Share Posted November 15, 2010 no, I wouldn't want anyone losing a licence. Just asking if a pre 1995 car can do the no cat test or not. I want to have a car that can pass a normal MOT but don't really want a cat, hiflow or not. Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted November 15, 2010 Share Posted November 15, 2010 To be fair on my 'friendly' MOT testing station, I do always take my second cat pipe to the garage, so if they need to swap it over for the test, then it's all above board on the day, and I take the risk from there on. I wouldn't want any garage losing their licence for taking those sorts of risks. the risks are if the vosa people are parked around the corner with there laptops and then pop there heads in once the mot test is logged off, they will then re-test the vehice. if we pass and its a fail then bye bye license and our bread and butter. best thing to do is pay extra and get the cat on for test then remove the cat, puts testers minds at rest and we can put our hands on heart at the end of the day.. Quote Link to comment Share on other sites More sharing options...
AndrewOW Posted November 15, 2010 Share Posted November 15, 2010 the risks are if the vosa people are parked around the corner with there laptops and then pop there heads in once the mot test is logged off, they will then re-test the vehice. if we pass and its a fail then bye bye license and our bread and butter. best thing to do is pay extra and get the cat on for test then remove the cat, puts testers minds at rest and we can put our hands on heart at the end of the day.. I have said this, but so far it's been declined, so they are taking the risks when they don't actually have to. I hope they know what they are doing! Quote Link to comment Share on other sites More sharing options...
Rob_Mitchell Posted November 15, 2010 Share Posted November 15, 2010 I have said this, but so far it's been declined, so they are taking the risks when they don't actually have to. I hope they know what they are doing! i would warn them mate, we had a similar case on a bike the other week but had a slap on the hand as they thought the number plate size was too small, but we argued it was suitable for its off road use and letting was clearly sized correct. Quote Link to comment Share on other sites More sharing options...
Shane Posted November 16, 2010 Share Posted November 16, 2010 Jackso, just put the second cat back on the the test and the next day remove it. That way everyone's covered and you get your ticket for another year. If you get pulled for a VOSA roadside check and fail the emissions because you have taken it off, most likely you will get a ticket giving you X amount of days to get it sorted, but I think the odds of this happening are slight. If you need a cat (either) to get it through then let me know and I can lend you one. no, I wouldn't want anyone losing a licence. Just asking if a pre 1995 car can do the no cat test or not. I want to have a car that can pass a normal MOT but don't really want a cat, hiflow or not. Quote Link to comment Share on other sites More sharing options...
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