clay Posted October 10, 2014 Share Posted October 10, 2014 So all TT supras need a cat to pass the,,,,,,, MOT.,,,,, is that right ,,,,BENJY Quote Link to comment Share on other sites More sharing options...
Mad Hatter Posted October 10, 2014 Author Share Posted October 10, 2014 It's a fail. You need a cat. Thanks Benjy ... ... now where the hell did I leave it ... Quote Link to comment Share on other sites More sharing options...
Mad Hatter Posted October 10, 2014 Author Share Posted October 10, 2014 Just take it somewhere friendly like the rest of us if you can point me to someone i'm sure beer tokens can come your way I'm in Essex but don't mind a little travel to save all this messing around. Quote Link to comment Share on other sites More sharing options...
Benjy Posted October 10, 2014 Share Posted October 10, 2014 So all TT supras need a cat to pass the,,,,,,, MOT.,,,,, is that right ,,,,BENJY Technically, yes. Unless you can prove that the J-Spec TT is tuned differently to UK TT Supra's. In which case, the details held on the gas analyzer aren't an EXACT match, and thus, any TT TT's > 01/08/1995 are subject to a cat test but have to meet a higher limit, so may well pass the emissions test if it's on a lean map, but should technically fail on cat removal. Unless the exhaust is covered. Can't see it, can't fail it. Quote Link to comment Share on other sites More sharing options...
jim Posted October 10, 2014 Share Posted October 10, 2014 Surprised our resident mot tester benjy hasn't popped up in here yet lol Quote Link to comment Share on other sites More sharing options...
Mad Hatter Posted October 10, 2014 Author Share Posted October 10, 2014 Technically, yes. Unless you can prove that the J-Spec TT is tuned differently to UK TT Supra's. In which case, the details held on the gas analyzer aren't an EXACT match, and thus, any TT TT's > 01/08/1995 are subject to a cat test but have to meet a higher limit, so may well pass the emissions test if it's on a lean map, but should technically fail on cat removal. Unless the exhaust is covered. Can't see it, can't fail it. Hold on, you said that my '94 need to have a cat to pass but you're saying here that any TT earlier that aug '95 (like mine) doesn't need a cat fitted ... ? I do like the "can't see it, can't fail it" mantra. maybe I should design a complete under vehicle tray that you tie on just to annoy the tester hehe Quote Link to comment Share on other sites More sharing options...
Benjy Posted October 10, 2014 Share Posted October 10, 2014 Hold on, you said that my '94 need to have a cat to pass but you're saying here that any TT earlier that aug '95 (like mine) doesn't need a cat fitted ... ? I do like the "can't see it, can't fail it" mantra. maybe I should design a complete under vehicle tray that you tie on just to annoy the tester hehe IF you can prove it's tuned differently to a UK spec, which is the engine described by the 2JZ-GTE code held on the gas analyzer. Uk's have EGR, different turbo's, bigger injectors... Quote Link to comment Share on other sites More sharing options...
Mad Hatter Posted October 10, 2014 Author Share Posted October 10, 2014 IF you can prove it's tuned differently to a UK spec, which is the engine described by the 2JZ-GTE code held on the gas analyzer. Uk's have EGR, different turbo's, bigger injectors... Right, I get ya ... this guy though being a decent bloke is at the intelligence level to accept what ever the computer tells him and the law book. All round it'll just be easier to put the cat back on and cross my fingers lol. Thanks for the insight Benjy! Quote Link to comment Share on other sites More sharing options...
Al Massey Posted October 10, 2014 Share Posted October 10, 2014 I told my guy it's an import. He checked the computer and came back and said it needs a non cat test. That's what the computer said Quote Link to comment Share on other sites More sharing options...
Scott Posted October 10, 2014 Share Posted October 10, 2014 It is still as clear as mud to me. Mine has failed for the same reason, so unless I can show the garage a vosa/dft/mot rules type document that shows they have performed the test incorrectly, then no cat still means an instant fail. I appreciate the help from everyone, Benjy seems to know his stuff .... Is there a doc you can point me to that I can shove under their nose and get my car back? There are a couple of different issues getting mixed up here which is muddying the waters slightly. 1. The document that you have quoted is stating that without a CAT your car is an instant fail. This appears open to interpretation as I read it being for Diesel vehicles only, the fact that it says Catalyst or DPF is still referring to diesels, as they still had a CAT in them prior to DPF technology.... they were just different. In this instance, if your car has a CAT removed from it, and IMO if it's a diesel, your car fails before I even take a reading from the exhaust. 2. If your car requires a CAT test (Debateable, but both opinions are plausible) then it gets the exhaust gas from the exhaust measured and compared to a table for your engine. If it passes the readings on said table it's a pass.... regardless of whether or not a CAT is present. In Havards case he needed the CAT in to pass the emmisions test, not to pass the "Do you have a CAT attached to your car" test. Both are very different scenarios. The second scenario has been around for years and different MOT stations have different opinions, the same as different cars get different results in the emmisions tests with and without CATS in. My car passed with a double de-cat... officially.... once..... Quote Link to comment Share on other sites More sharing options...
Benjy Posted October 10, 2014 Share Posted October 10, 2014 There are a couple of different issues getting mixed up here which is muddying the waters slightly. 1. The document that you have quoted is stating that without a CAT your car is an instant fail. This appears open to interpretation as I read it being for Diesel vehicles only, the fact that it says Catalyst or DPF is still referring to diesels, as they still had a CAT in them prior to DPF technology.... they were just different. In this instance, if your car has a CAT removed from it, and IMO if it's a diesel, your car fails before I even take a reading from the exhaust. 2. If your car requires a CAT test (Debateable, but both opinions are plausible) then it gets the exhaust gas from the exhaust measured and compared to a table for your engine. If it passes the readings on said table it's a pass.... regardless of whether or not a CAT is present. In Havards case he needed the CAT in to pass the emmisions test, not to pass the "Do you have a CAT attached to your car" test. Both are very different scenarios. The second scenario has been around for years and different MOT stations have different opinions, the same as different cars get different results in the emmisions tests with and without CATS in. My car passed with a double de-cat... officially.... once..... DVSA popped in the other day for a site visit. Always interesting watching them struggle for the correct answer. But all they do is try an muddy the waters further so that the onus is on the tester. Quote Link to comment Share on other sites More sharing options...
Mad Hatter Posted October 10, 2014 Author Share Posted October 10, 2014 Well it may all be for naught now ... i've just jumped online to check the MOT status and tax it and low and behold the record says it has passed and allowed me to tax it. When I stop f'ing and blinding I'll have to give this chap a call and ask WTF is going on! .... he's not getting paid at this rate lol. Quote Link to comment Share on other sites More sharing options...
garethr Posted October 11, 2014 Share Posted October 11, 2014 .... Is there a doc you can point me to...?http://www.motinfo.gov.uk/htdocs/index.htm Quote Link to comment Share on other sites More sharing options...
Havard Posted October 11, 2014 Share Posted October 11, 2014 Just take it somewhere friendly like the rest of us I went to a friendly and he said that due to the change of rules with VOSA it just wasn't worth the risk of losing his licence. Quote Link to comment Share on other sites More sharing options...
jay200bhp Posted October 11, 2014 Share Posted October 11, 2014 Well it may all be for naught now ... i've just jumped online to check the MOT status and tax it and low and behold the record says it has passed and allowed me to tax it. When I stop f'ing and blinding I'll have to give this chap a call and ask WTF is going on! .... he's not getting paid at this rate lol. What are you worried for then yove got a magic mot pass!! Quote Link to comment Share on other sites More sharing options...
Scott Posted October 11, 2014 Share Posted October 11, 2014 I went to a friendly and he said that due to the change of rules with VOSA it just wasn't worth the risk of losing his licence. That's not very friendly Sometimes they will be more accepting if you take the CAT in the boot, that way it was tested with it in as far as they are concerned. Quote Link to comment Share on other sites More sharing options...
Mad Hatter Posted October 14, 2014 Author Share Posted October 14, 2014 The garage boss was quite confused, as was I. To avoid the argument of whether it should have passed or not I happily paid the bill and got out of there. Likely not to return. - - - Updated - - - That's the way to do it I hear... I'll know for next time now. Quote Link to comment Share on other sites More sharing options...
mellonman Posted October 15, 2014 Share Posted October 15, 2014 A MOT pass with no MOT thats sounds great wheres this garrage Quote Link to comment Share on other sites More sharing options...
james_cbr Posted October 15, 2014 Share Posted October 15, 2014 my na passes cat tests with first cat in place and second cat decat pipe Quote Link to comment Share on other sites More sharing options...
Al Massey Posted October 15, 2014 Share Posted October 15, 2014 my na passes cat tests with first cat in place and second cat decat pipe Your NA shouldn't have a cat test for emissions, should be a non cat test Quote Link to comment Share on other sites More sharing options...
Benjy Posted October 15, 2014 Share Posted October 15, 2014 It'll get a BET test first Al... Quote Link to comment Share on other sites More sharing options...
Al Massey Posted October 15, 2014 Share Posted October 15, 2014 It'll get a BET test first Al... A what test? Quote Link to comment Share on other sites More sharing options...
Benjy Posted October 15, 2014 Share Posted October 15, 2014 Basic Emissions Test. If it passes the BET test, all good. If you fail the BET test, that's where cat and pre-cat tests come into play. Quote Link to comment Share on other sites More sharing options...
Al Massey Posted October 15, 2014 Share Posted October 15, 2014 Basic Emissions Test. If it passes the BET test, all good. If you fail the BET test, that's where cat and pre-cat tests come into play. Oh, I've never had that done, always been a non cat test or a paper pass Quote Link to comment Share on other sites More sharing options...
Benjy Posted October 15, 2014 Share Posted October 15, 2014 You have to do the BET test first. Most gas analysers won't let you do it any other way. Quote Link to comment Share on other sites More sharing options...
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