yellowchinaman Posted February 23, 2013 Report Share Posted February 23, 2013 I have a hks silent. Nice. Since changing the front to a 3 inch flexi and decat, its noticeably louder. Today I did quite a bit of motorway driving and I was going crazy. Q. Does anyone know if the japspeed exhaust bung can reduce the deep drum? I am assuming the back boxes are 4" same as my HKS so it should be compatible rite? Where can I get one? Link to comment Share on other sites More sharing options...
Adex Posted February 23, 2013 Report Share Posted February 23, 2013 When I was looking for a bung for my Nur-Spec, I was thinking of getting an APEXi (Naturally ) 'active' bung - Mine was on the car when I bought it y'see & I never got the bung. They've sprung loaded flappy bits so they're loud when you're caning it, but quiet at lower revs. Might be something to consider...? (In the end I spotted a Nur-Spec bung being sold on ebay, it was brand new & had never been fitted, so for the £20 it cost me, I was well happy!). Link to comment Share on other sites More sharing options...
yellowchinaman Posted February 24, 2013 Author Report Share Posted February 24, 2013 I saw the apexi one. Think t was £115 and I dont want it to be poud when im caning it in the motorway so I thinm a fixed silent bug is what Im after. I didnt know nurspec made bugs. Are they all interchangeable? Link to comment Share on other sites More sharing options...
yellowchinaman Posted February 24, 2013 Author Report Share Posted February 24, 2013 think this'll work? http://www.ebay.co.uk/itm/4-Universal-Exhaust-Silencer-Db-Killer-Fits-Jap-Box-Baffle-Bung-/251045314055?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item3a73777e07 Link to comment Share on other sites More sharing options...
fieldy Posted February 24, 2013 Report Share Posted February 24, 2013 think this'll work? http://www.ebay.co.u...=item3a73777e07 I reckon that will be ok if the inner diameter of your exhaust matches up with this Link to comment Share on other sites More sharing options...
mr02mcg Posted February 24, 2013 Report Share Posted February 24, 2013 I just bought that bung to get my car through its mot, it didnt silence the car that much and because the end of it is closed off the emissions couldnt be done with it in. Hope this helps you. Link to comment Share on other sites More sharing options...
yellowchinaman Posted February 24, 2013 Author Report Share Posted February 24, 2013 I just bought that bung to get my car through its mot, it didnt silence the car that much and because the end of it is closed off the emissions couldnt be done with it in. Hope this helps you. what dobyou mean the end of it was closed? The inside bit you mean? There are some which isnt like a hole filter but just a tube like thenurspec. will that work? Link to comment Share on other sites More sharing options...
Adex Posted February 24, 2013 Report Share Posted February 24, 2013 I didnt know nurspec made bugs. Are they all interchangeable? Well, my bung came from a fella who'd just bought a Nur-Spec for his Scooby. But yeah, from what I could see in checking, they were all the same. http://www.ebay.co.u...=item3a73777e07 I'd say this one probably even turns the tailpipe section of the silencer in to a secondary silencer if you see what I mean? As it has holes in the center tube, whereas the Nur-Spec just has a pipe as you mention, all it's doing is stopping the sound waves bouncing around in the end section. But I'm a brand whore* though so it had to be Blitz or better for me. * Well, I am now. When a bit younger I used to buy cheaper stuff, but I want the best for my car now. Link to comment Share on other sites More sharing options...
yellowchinaman Posted February 24, 2013 Author Report Share Posted February 24, 2013 http://www.ebay.co.uk/itm/140MM-EXHAUST-BAFFLE-DECIBEL-KILLER-FOR-4-102MM-PIPE-/200606943321?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2eb51b0859 so this is what I need. a through pipe. How will this effect performance? Link to comment Share on other sites More sharing options...
Adex Posted February 24, 2013 Report Share Posted February 24, 2013 (edited) I would have thought the effect on performance would be negligible, as all you're really doing is making the center pipe of the exhaust 6 or so inches longer, you're not restricting the gas flow to any significant degree more than the pipe exiting the silencer (not the tail pipe trim) does anyway. I say more than it does anyway, because if you look up your exhaust, the diameter of the pipe exiting the silencer, at least on a N/Spec is smaller than the diameter of the majority of the system. So there does appear to be some sort of reduction in size from one end of the silencer to the other. Surely all a solid (rather than the perforated one you've linked) bung does is mean the gas & sound waves exit the smaller diameter pipe directly to atmosphere, instead of bouncing around in the 4" wide part at the end before doing so. Edited February 24, 2013 by Adex Link to comment Share on other sites More sharing options...
Tr1cksta Posted February 25, 2013 Report Share Posted February 25, 2013 http://www.ebay.co.uk/itm/140MM-EXHAUST-BAFFLE-DECIBEL-KILLER-FOR-4-102MM-PIPE-/200606943321?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item2eb51b0859 so this is what I need. a through pipe. How will this effect performance? Hi mate.......if you need one of these, you can have my tanabe one (for cost of postage), if it fits.... I'll get the dimensions for you tomorrow if you want... Link to comment Share on other sites More sharing options...
Tr1cksta Posted February 26, 2013 Report Share Posted February 26, 2013 Here you go mate... Link to comment Share on other sites More sharing options...
Cravo Posted February 27, 2013 Report Share Posted February 27, 2013 If ray doesn't want it matey I might Link to comment Share on other sites More sharing options...
Tr1cksta Posted February 27, 2013 Report Share Posted February 27, 2013 If ray doesn't want it matey I might Ok mate Link to comment Share on other sites More sharing options...
yellowchinaman Posted February 27, 2013 Author Report Share Posted February 27, 2013 Cravo it's all yours. I ordered one off ebay. Turns out mine was 4.5 not 4". Thanks anway Link to comment Share on other sites More sharing options...
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