Tris 0 Posted March 12, 2010 Report Share Posted March 12, 2010 I have just bought a stainless steel exhaust with de cat and a 6 branch stainless manifold.the system has one thin round centre box and then the back box.If I cut the centre box out will I have trouble with sound limits on track days.or will it be too loud full stop.? Link to post Share on other sites
J5KE F 0 Posted March 12, 2010 Report Share Posted March 12, 2010 You may well have issues on track days as i know javelin have lowered the noise limit to 88 on some circuits.My first vr had 6 branch, Decat, luggage box removed and rear box and that was noisy! 98db really droney on long hauls too! But if u love the sound of the vr then it'll never be an issue Link to post Share on other sites
legvw 0 Posted March 13, 2010 Report Share Posted March 13, 2010 ^^^^^as above.I run a 3" system, with a small straight through silencer, then a straight through backbox. It could almost do with another silencer as it does get on your nerves on long jounrneys, but i've got no room!Does yours really need the center box cutting out?? If it flows striaght through the box it shouldn't restrict the flow too much. Link to post Share on other sites
adam_christie 0 Posted March 13, 2010 Report Share Posted March 13, 2010 Most performance exhausts are "un-baffled", they have resonance chambers to help eliminate the drone that they can produce. A company here in Walsall installed a 2.5" system on my VR a few years ago, and it was so loud I had it taken off and replaced with a Jetex system. They tried to fob me off by saying "It's loud because the boxes are straight through". The real reason is that they didn't engineer it properly and the system was acting like a trumpet. Basically, a system with no resonance chambers, like you want, can be relatively quiet. You just need to make sure the volume of air in your exhaust system is sufficient so that the noise doesn't fart out the tailpipe! Link to post Share on other sites
matty.vrt 120 Posted March 13, 2010 Report Share Posted March 13, 2010 loud exhausts are fine if you don't have a girlfriend or want to keep the one you have lol Link to post Share on other sites
legvw 0 Posted March 13, 2010 Report Share Posted March 13, 2010 loud exhausts are fine if you don't have a girlfriend or want to keep the one you have lol LOL! Been having troubles with yours mate? :-) Link to post Share on other sites
Tris 0 Posted March 13, 2010 Author Report Share Posted March 13, 2010 it was just a sound thing. I will keep the box in the centre then Link to post Share on other sites
Scott 0 Posted March 13, 2010 Report Share Posted March 13, 2010 they sound too raspy with no resonator mate.Heres my fav sounding VR6, same setup as I have lol: clickyand another guy with similar set up:http://www.youtube.com/user/donvitovr6 clicky - play main vid. Link to post Share on other sites
H13VYY 0 Posted March 13, 2010 Report Share Posted March 13, 2010 they sound too raspy with no resonator mate.Heres my fav sounding VR6' date=' same setup as I have lol: clickyand another guy with similar set up:http://www.youtube.com/user/donvitovr6 clicky - play main vid.[/quote']sounds EVIL!! Link to post Share on other sites
matty.vrt 120 Posted March 13, 2010 Report Share Posted March 13, 2010 loud exhausts are fine if you don't have a girlfriend or want to keep the one you have lol LOL! Been having troubles with yours mate? :-)yeh had a few different ones never happy. Link to post Share on other sites
dman78 1 Posted March 14, 2010 Report Share Posted March 14, 2010 i got 6,straight branch,no cat with a staight pipe to my jetex backbox Link to post Share on other sites
Tris 0 Posted March 14, 2010 Author Report Share Posted March 14, 2010 how loud is it dan? Link to post Share on other sites
cabrioman 6 Posted March 14, 2010 Report Share Posted March 14, 2010 i got a 6 brance, and stright throu 3" system with just a small back box ... can sit at `cough` 90-100 `cough` on motorway and its quite untill u hit the loud pedal and all hell breaks loose scares women and children and some men ..... lol as for DB not sure aint tested it yet will when i get back from the ring ... Link to post Share on other sites
cabrioman 6 Posted March 14, 2010 Report Share Posted March 14, 2010 check my build thread for 3 vids for noise ..... Link to post Share on other sites
craggsy 91 Posted March 14, 2010 Report Share Posted March 14, 2010 Tony id check it before the ring mate if its that loud Link to post Share on other sites
cabrioman 6 Posted March 14, 2010 Report Share Posted March 14, 2010 goin to try to once charger is back on .... finger crossed lol Link to post Share on other sites
dman78 1 Posted March 15, 2010 Report Share Posted March 15, 2010 its loud enough but its a sweet noise,you get use to it,cant beat that vr6 sound Link to post Share on other sites
vr6stormt 0 Posted March 15, 2010 Report Share Posted March 15, 2010 2,5" to a twin dtm bacbox not to loud until i get cramp in my right foot and then it sounds like its spitting fire proper rally spec on decell lol Link to post Share on other sites
VeedubVR 0 Posted April 23, 2010 Report Share Posted April 23, 2010 Anyone had any trouble with their exhausts with the Police?The VR ive got is loud especially at 60 on the motorway (awful drone). 50mph or 70 and its quieter. around town at 30 its lud in 5th, drop it down to 4th and its ok, still loud but not deafening. But I would like it quieter. Its got a 6 branch, decat through to a scorpion backbox. It sounds mental on full chat and pops like mad (you would think some1 was firing a machine gun). What can I add?Thanks(got a strong smell of fuel round the back aswel, but its not leaking) Link to post Share on other sites
legvw 0 Posted April 23, 2010 Report Share Posted April 23, 2010 Have a look on here http://www.jetex.co.uk/website/custom_parts.php?mat=Stainless&dia=2.5+inch if you some1 handy with a welder, get them to fit a silencer in, should reduce the noise. Link to post Share on other sites
bungy 2 Posted April 23, 2010 Report Share Posted April 23, 2010 There is an iphone app that measures db's and it is free. I tried it next to a db meter at work and it is pretty accurate. Link to post Share on other sites
hvr6 88 Posted April 23, 2010 Report Share Posted April 23, 2010 i got a 6 brance' date=' and stright throu 3" system with just a small back box ... can sit at `cough` 90-100 `cough` on motorway and its quite untill u hit the loud pedal and all hell breaks loose scares women and children and some men ..... lol as for DB not sure aint tested it yet will when i get back from the ring ...[/quote']it's VERY LOUD!!! Link to post Share on other sites
rodney 17 Posted April 23, 2010 Report Share Posted April 23, 2010 chaps(esses)...Some good points in this and here is my 2p worth..This comes down to getting a well engineered product.. I have had made to order systems before and they all work and give you the dBA you need and they are engineered for no drone/bypass/screacher pipes etc etc.. but you pays for whats you gets... and they can cost as well as needeing a service every year..On a budget level the best I have found that gives me a nice subtle sound and low dBA until the peddles are pressed are the Longlife systems.. As long as you spend some time chatting to the techy people at HQ first (confirming your middle name isnt asbo mc'chav), then they understand your needsThen the costs are the same as say a Miltek system.. But with zero (minimal) drone at motorway speeds etc etc...I have mine which is good enough to make peole look trying to figure out whats different (combined with the charger whistle) and is still rated correctly for my charger so it breathes correctly..then when on song everyone turns and looks ... looking for something much more exotic than a red more door.. I would recommend you dont do a straght through as a level of pressure is needed by the engine system (air pump) where you may make it less restrictive but lower your BHP overall.... or certainly make it less drive-able.. (subject to a remap)Finally to pick up on the final point. They will make you a silencer to pop in and will/should not cost you the earth.Give 'em a go and see how it works for ya'And Matty you gotta leave the 'Boro to escape the 'boro girls.. Link to post Share on other sites
chazvr 1 Posted April 24, 2010 Report Share Posted April 24, 2010 they sound too raspy with no resonator mate.Heres my fav sounding VR6' date=' same setup as I have lol: clickyand another guy with similar set up:http://www.youtube.com/user/donvitovr6 clicky - play main vid.[/quote']thats sound naughty. This is my favourite sounding vr6...on tickover anyway Link to post Share on other sites
tjsmudger 2 Posted April 24, 2010 Report Share Posted April 24, 2010 Bungy, what's that app called!! Link to post Share on other sites
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