its THAT time of year, when I get an MoT Advisory for “loud”... My 2013 T100 has Dunstall exhausts, they hardly qualify as “silencers”, with the AIS plumbing removed and a remap of the ECU to suit. From various comments, I believe it would be possible to have the OEM silencers back, without fitting the AIS, giving less noise but little real effect on the performance. Anyone done this?
Just for the sake of the MOT it should be ok but the bike will run very rich. I've found most MOT stations are not so fussed about loud pipes as long as they do not have "NOT FOR ROAD USE" emblazoned on them. They are more concerned about things like non E marked electrical add on's. You could drop into the station to see if they are ok with the Dunstalls. They might just say yeh it's ok just to ensure you take the bike there for its MOT.
I don’t worry about the Advisory, but I do care that the bike is unnecessarily loud for little or no useful reason. I’ve spent a lot of time around Racing machinery, and when my road bike is louder than a grssstrack bike with 14:1 compression making 40% higher specific power output, I have to wonder why?
I had straight through Dunstall exhausts on my old T100 - asked the MOT tester if they would pass or should I put the stock ones back on. "Don't worry" he said "We're all deaf in here!"
I didn’t fit them, they were fitted by the PO who spent a lot more than I would have, on things which in some cases didn’t really add to the function or value of the machine.
Then I'm afraid the only answer, is standard pipes and a standard ECU remap. Something like this http://www.worldoftriumph.com/trium...380777-se/triumph-tapered-silencers-pair.html TuneECU, USB Dongle and a standard map http://tuneecu.com/Tune_List.html Should sort out the noise and back in standard trim
Hi I have bc predators on my thruxton, 4 mots 1 pass, 1 fail, 1advisory and the last one a fail then a retest and pass without me doing anything cos he knew I’d just go home swap them then swap them back. For the 1st fail, I took the bike home put the originals on and then took it back, a 30 mile round trip, didn’t remap or anything swapped back when I got home, it’s still working!
Without a DB meter placed exactly at one metre from the exhaust, I'd say that is down the discretion of the MoT tester............ maybe
https://www.mot-testing.service.gov.uk/documents/manuals/m1s07000101.htm Its not very definitive, and open to discretion ................
Yeah its that 2nd one in the third column of such a type that the noise emitted is clearly in excess of that which would be produced by a similar machine fitted with a standard silencer in average condition. everyone knows the standard pipes make the thruxton sound like a sewing machine so anything louder is dubious. In fact according to the V5c, stationary its meant to be a max of 91db at 3700 revs which is about the same as a hairdryer and on drve by at the same revs 79db, that of a washing machine. My Tiger has a higher allowance! go figure.
