customising an exhaust for rasp

[hammoj28]

Cool.

[cliffybabe]

then it wil be quiter,,, and rattle like a btich,,, hmm you may have solved my problem. lol

Ali u know me mate always full of good idea's on a serious note what about a reducer nozzel made to sit in the tips of the pipes???

[fowler]

right the problem with you system ali is the pipe diamiter on the back box is to free flowing thats why you get the loud burblewhat you want is stadard exhaust to the back box just to make it a bit quiter give me a call later and i will have a look as my mate works at powerflow, or have the guys at longlife havea look as a geeza down there hasa 318is and it sounds the tits bit like E46 M3.

[dark_sounds]

right the problem with you system ali is the pipe diamiter on the back box is to free flowing thats why you get the loud burblewhat you want is stadard exhaust to the back box just to make it a bit quiter give me a call later and i will have a look as my mate works at powerflow, or have the guys at longlife havea look as a geeza down there hasa 318is and it sounds the tits bit like E46 M3.

nice one mate! yeah thats how i want it to sound, ill let them rip it apart,,, as long as it dont cost too much! lol

[cliffybabe]

as long as it dont cost too much! lol

Come ali u knw u dont care

[cliffybabe]

Ali Longlife are a good firm mate they done the merc

[stuartgallafant]

but she was still sporting the factory exhaust system right through and it sounded well raspy especially at high rpm. Back then i always thought there was something wrong with it! but thats how they sound!

i agree with you Si, i've got a standard system on mine, an it is fairly raspy, esp at high revs! but i'd like it if i could go one step further and have it sound like a bag of nails inthe exhaust like the E46 M3!!

[cliffybabe]

bag of nails inthe exhaust like the E46 M3!!

[JazzMan]

sets of occasional alarm

indeed...

ali, i did have an E46 M3 back box sitting by my toolbox at work, which i was gonna cut open to see how they acheive the sound, but some f*ck*r took it! bloody cleaners!!

i assuming, that the bafflers inside the box wobbly, or rattle, kind of like the bit of plastic inside a kazoo (the toys that kids have that sounds like a constipated duck when you blow into it!!) but im not sure!

i'd be interested to know though. we were talking about this a while ago wernt we?!

You might be interested in this article, goes into detail on the E46 M3 exhaust and its design issues (and naturally how much better the Dinan one is! ): http://www.dinancars.com/whitepapersFile.asp?ID=3

I found it quite interesting as I've been looking at exhaust design recently.

[dark_sounds]

it says apparently because of the way the gases have to make a U-turn in the back box it gives it a note that most M3 owners dont like.... bah fools! what do they know!

but this also means that im guessing in order to get a similar sound,, there needs to be a rear box that does similar ie,, makes the gasses jiggle,,, also in this case it means that its on a twin (or quad) system,, so in our case,, fort a sinple one side back box,,, the gases need to make a 360 turn inside the rear box, and achieving this is going to be impossible with powerflow/longlife because they only design and make "free flow" systems,, whcih essentially the dinan one is,, and also performs better... so is it worth it??

personally i dont relly mind aboiut performance, i just want the damn sound!

[stuartgallafant]

well to be honest, i'd rather performance over sound! at the end of the day, getting better performance will surely make the sound better anyway!!

im still gonna look into it though. i know a guy that works for longmill (or it might be longlife?!), so i'll speak to him and see what he knows

[dark_sounds]

cool get on the case will be very interested as to what he comes up with

[cliffybabe]

as i sdaid longlife done my motor and its sounds wicked and has made it feel a bit sharper