I have an NC2 with one of those Sound Tubes, its a 2.0 2010 sport tech. I’d like to hear the car without the piped in slightly iffy induction noise. I can see that it is removable with a few bits added, is there not a far simpler way to silence what is coming into the cabin, by possibly blocking t…

I’ll take a picture in a minute…

Ok so I’ve been to look and i remember how I did not now. Leave the first bit of the concertina pipe from the induction tube in place and pop a bottle top of the correct diameter in there. I managed to find a top hat shaped one that was perfect but a normal top would do. IIRC 29mm is the size. Rip o…

Found my ND post. [image] RF Thoughts MX-5 Chat I blocked mine, like this;

Odd that people mention a resonator in-line. I cut mine open and it is actually more of an amplifier. It actually amplifies the engine induction sound and sends it into the cabin. After removing it mine is incredibly quiet in the cabin now. It isn’t even a small difference that could be missed, it’s…

I wanted my ND to look standard, so I detached the rubber flexible bit and secured a plastic bung into the hole. I then injected expanding foam into the pipe end that goes into the bulkhead before refitting the sound tube, slid over the plastic bung. The car is now without the piped induction noise …

Thanks for that - so the difference in sound is significant then - and you can enjoy the exhausts noise and engine without the drone. I like the sound of that. I might just pull the bulkhead tube out and stuff it with insulating foam and put it back it back together. As long as the tube is blowing i…

So 3 bolts off, bulkhead end of tube in my hand, wedged a large dense sponge in (ain’t no way its going to move anywhere), and the sound of the car is transformed. I am delighted, no drone sound, much more satisfying mechanical sound is present and next week a Japspeed rear box goes on to put the ch…

I bought the replacement part from “MX5 Parts” prior to the arrival of my ND 30AE and I removed and replaced the “sound tube” assembly as soon as I got the car home - 15 minute job, could be quicker but I’m useless with those sort of tasks!

Just saw this again. I blocked mine with a brass insert I use for blanking 22mm compression fittings (plumber). Rolled for 3 months with it in, removed it and found no difference in the noise levels in the cabin. I actually have the delete kit I bought to do it properly but will sell it on at some p…

I deleted my post asking about this sound tube, it was pretty obvious what needs to be done once I’d taken a second look at it. I’ll have go today if it stops raining.

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Turning off the Sound Tube without removal? - Quick Hack?

Technical Area Engine, Transmission, Exhaust etc