Calzo21 Posted December 5, 2012 Share Posted December 5, 2012 Hello guys and dolls, First thread but been looking around here and found out a lot of info for the supra just from reading so thanks! Onto my question, I don't want to go double decat cos come mot day I don't want to be messing about taking cat on an off due to failing the emission levels that would be high from a double decat So has anyone Experience with Hi flow cats are they much good or as good as chocolate kettle haha? My question/idea being...if I take the 1st cat out and put the hi flow cat in place of 2nd cat, how would the Emissions fair up?? Callum Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 5, 2012 Author Share Posted December 5, 2012 Forgot to add, it's a '97 J Spec Auto TT Quote Link to comment Share on other sites More sharing options...
drift_bear Posted December 5, 2012 Share Posted December 5, 2012 If you run double de-cat you will need a restrictor ring in place. Just put your 2nd cat (closest to the back box) back on cone mot time, that's what I do and so do alot of others. I don't have experience with these other cats you talked about, hopefully someone with experience/better knowledge will be along later to help P.s just noticed your from the borders? Where about? Get a proper newbie thread on the go Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 5, 2012 Author Share Posted December 5, 2012 Thanks for the speedy reply! Yeah iv read that it'd need a restrictor ring for a Double Decat How easy is it to fit the 2nd cat back on by yourself... Providing that I don't have a lift or garage...it seems like a tight messy unsafe job being on jacks haha Quote Link to comment Share on other sites More sharing options...
drift_bear Posted December 5, 2012 Share Posted December 5, 2012 Thanks for the speedy reply! Yeah iv read that it'd need a restrictor ring for a Double Decat How easy is it to fit the 2nd cat back on by yourself... Providing that I don't have a lift or garage...it seems like a tight messy unsafe job being on jacks haha If your talking about the cat closest to the manifold then it's a pain in the butt! I done both mine the use of a pit! If you ask a garage they can do it for you aswell. I get my garage to fit the cat closest to the back box back on before mot and back off after Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 5, 2012 Author Share Posted December 5, 2012 I'd imagine it would but it was the furthest back I meant Yeah I'd actually thought of that but thought the garage might cotton on what's happening, more money in there pocket I suppose hopefully someone can shed some light if using the high flow cat is good as an alternative ...Stupid emissions law Quote Link to comment Share on other sites More sharing options...
Ian C Posted December 5, 2012 Share Posted December 5, 2012 The second cat is pretty easy to swap in and out, four easily-accessible big bolts and you're done. Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 5, 2012 Author Share Posted December 5, 2012 Aw really? Well that's not too bad, il try figure it out and have a good look when it's better weather Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 6, 2012 Author Share Posted December 6, 2012 P.s just noticed your from the borders? Where about? Get a proper newbie thread on the go Hahaha yeah I am !! Hawick? Where abouts are you? Quote Link to comment Share on other sites More sharing options...
SteveC Posted December 6, 2012 Share Posted December 6, 2012 (edited) I've thought about fitting a sports cat - not just for MOT purposes, but just in case I was pulled for a roadside emissions/safety check. From what I've read on various forums, a sports cat doesn't always seem to guarantee an emissions test pass but, as with any cat, it must be hot to have a decent chance of passing. It would appear that with a roadside test they ask you to get the emissions problem sorted within a couple of weeks and retested (at an MOT station, I assume), but they could also issue a fixed penalty at the time of the 'pull'. For the sake of a few bhp, I think it may be worth having a sports cat fitted to ensure hassle-free motoring - at least as far as emissions are concerned. I'll look into this further next year. http://www.dft.gov.uk/vosa/publications/businesslinkwebpages/vehicleemissionschecksandstops.htm Edited December 6, 2012 by SteveC (see edit history) Quote Link to comment Share on other sites More sharing options...
Benjy Posted December 6, 2012 Share Posted December 6, 2012 Save money on a sports cat and stuff some tea bags in the tail pipe instead. It'll do just as much good as the sports cat. Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 6, 2012 Author Share Posted December 6, 2012 That's exactly why I'm asking this at all, I don't mind about the sacrifice of a couple ponies as long as I have peace of mind when mot day comes or even if a copper pulls me over I'd rather take the chance of having that in then just a straight pipe so thanks that input and the link Steve:thumbs: I'm guessing that's you implying a sports cat is useless Ben i wonder if it's make a good cuppa?? Anyways have you experienced having a sports cat in and it being useless?? Quote Link to comment Share on other sites More sharing options...
Benjy Posted December 6, 2012 Share Posted December 6, 2012 They're useless mate. I personally would decat it and find a friendly MOT tester. Or re fit them at test time. Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 6, 2012 Author Share Posted December 6, 2012 Yeah that is most people's consensus on the subject, worst comes to worst il just do that anyways But it's the being 'pulled over' part I'm thinking of Quote Link to comment Share on other sites More sharing options...
Benjy Posted December 6, 2012 Share Posted December 6, 2012 Don't drive like a retard and you'll be fine Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 6, 2012 Author Share Posted December 6, 2012 Hahah me+driving = Retard!?....Never Actually been followed right around town by a Speed police BMW all the way to my road, parked up and got out as they were slowly driving past haha Quote Link to comment Share on other sites More sharing options...
SteveC Posted December 6, 2012 Share Posted December 6, 2012 Don't drive like a retard and you'll be fine The spot checks at the side of the road are nothing to do with driving like a retard! It's the Police 'randomly' pulling vehicles into a lay-by and then the emissions are tested; they may also check the rest of the vehicle over - tyres, lights etc etc. I've seen numerous roadside spot checks, but luckily I never been pulled over... yet. Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 6, 2012 Author Share Posted December 6, 2012 The spot checks at the side of the road are nothing to do with driving like a retard! It's the Police 'randomly' pulling vehicles into a lay-by and then the emissions are tested; they may also check the rest of the vehicle over - tyres, lights etc etc. I've seen numerous roadside spot checks, but luckily I never been pulled over... yet. Yeah the police do a lot of checks because in the borders there's a lot of young drivers in there corsas that have 2.0 but are declared as 1.2 so every so often they crack down stopping anyone in a Non standard car and do they checks That time I mentioned about the Police BMW was actually one of they nights funnily enough Quote Link to comment Share on other sites More sharing options...
johnny g Posted December 6, 2012 Share Posted December 6, 2012 Use an exhaust cutout that will only activate on boost. Job done. Quote Link to comment Share on other sites More sharing options...
Calzo21 Posted December 6, 2012 Author Share Posted December 6, 2012 Use an exhaust cutout that will only activate on boost. Job done. Now that's something new to me that, what activates ? Haha Quote Link to comment Share on other sites More sharing options...
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