Could be wrong but as I understand it,an exhaust doesnt need to have any markings on it. Noise level is down to MOT testers discretion as long as its not stamped `NOT FOR ROAD USE` or `RACE USE ONLY`!!
(28-04-13, 07:45 PM)Doddsie link Wrote: Could be wrong but as I understand it,an exhaust doesnt need to have any markings on it. Noise level is down to MOT testers discretion as long as its not stamped `NOT FOR ROAD USE` or `RACE USE ONLY`!!
The regulations are written in a style intended for manufacturers and retailers rather than the end user. If a silencer meets the required level of noise reduction then it is stamped BS AU 193, otherwise it gets "not for road use" or "pre 1885 M/Cs only" according to the level and intended market. However, the stamp applies to the unit as sold… if it has removable baffles and the end user takes those out, the silencer may (i.e will almost certainly) be too loud to pass the relevant noise limit. Since it looks like you could drop a ping-pong ball through that Carbon Can Company silencer it'd be very surprising if it's within the limit. The fact that police don't carry dB meters means you're unlikely to have a problem unless you make a nuisance of yourself, but you might need a lenient MOT tester.
(28-04-13, 07:23 PM)Tiberius Onklevaart link Wrote: It has perforations at bottom, assuming therefore that its baffled. It roars but doesn't say anywhere not for road use.
Tried to catch said perforations in shot but phone only focuses one thing at a time.
Legal and passing an mot are not allways the same thing.
My twin port blue flame is stamped but with baffels removed its to loud to be legal, yet still passes mot with ease.
(28-04-13, 11:50 PM)Tiberius Onklevaart link Wrote: Straight throughs can pass and be legal, no?
Yes, but it depends on how the internals are arranged. A gun silencer does an impressive job of keeping the dBs down and is obviously a straight through design.
That can of yours has a mounting hole for a baffle on the one port fully visible in your pic, I'm willing to bet there's a corresponding one on the other port. If it could pass the noise restrictions without the baffles in... what would be the point of them?