Supra-Power Posted May 22, 2004 Share Posted May 22, 2004 Took my de-cat TT for an mot and had my fingers crossed that it may have passed the emissions test but no luck!!!. Will my n/a downpipe fit my uk tt?? My n/a is a stock exhaust and i have a nur spec on the TT Quote Link to comment Share on other sites More sharing options...
Seb Posted May 22, 2004 Share Posted May 22, 2004 Can't answer your question mate, but just curious how far out the readings were on emissions over the pass level? Seb Quote Link to comment Share on other sites More sharing options...
Supra-Power Posted May 22, 2004 Author Share Posted May 22, 2004 it passed the 'natural idle'test but my read outs and the others were 0.63%....im hoping it'll pass if i put just one cat in. Not sure what to do....... edited because im a wanker:blink: Quote Link to comment Share on other sites More sharing options...
Seb Posted May 22, 2004 Share Posted May 22, 2004 I need to get an MoT soon, trouble is I'm not sure if I have a one piece or two piece de-cat pipe. Having one cat on will pass the MoT for you. I'm hoping to find a friendly MoT station. Seb Quote Link to comment Share on other sites More sharing options...
dude Posted May 23, 2004 Share Posted May 23, 2004 Mark Kindell would be able to offer some advice on this matter and is local to you guys (sort of), i suggest mailing/pm'ing him Dude:flame Dev Quote Link to comment Share on other sites More sharing options...
Graham S Posted May 23, 2004 Share Posted May 23, 2004 I've had this problem in work when i have to MOT cars with large diameter tailpipes it tends to put the CO and Lambda readings throught the roof. found a quick fix that works, don't know if your MOT station would try it though!! Where you shove the pipe up the exhaust to measure emissions, get them to do that as normal then shove something around the exhaust, I've found a normal black bin does wonders!! try and get it as far over the exhaust as you can and this recirculates the exhaust gasses around and lowers the Lambda and CO! Its somehing to do with to much air getting into the exhaust probe and giving dodgy readings! Not sure if that sounds clear enough though! It has worked everytime for me and did so on saturday when i MOT'd a mates calibra turbo with 6x4 oval pipe! Hope that helps Quote Link to comment Share on other sites More sharing options...
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