Mufflerectomy

[rob_coventry]

Hi all,
I have a 03 b6 a4 tdi 130bhp, I'm looking to do a back box delete. Preferably I would like to make a bolt on piece to put in place of the stock back box. Has anyone on here ever done it? Any advice on what pipe/bends/fixings I will need?
Thanks in advance.

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[zollaf]

i would ask why. you will end up with an awful droning noise and no extra power.

[rob_coventry]

From what I've read it frees up some power as the factory box is really restrictive. I will be keeping the mid box

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[Gazwould]

It does but best results are with a decat .

Removing one of the boxes won't be a drone .

The silencers are a deflection baffle set up so not straight through and restrictive .

If like a Passat B5.5 the center box is a 15kg double skinned item .

I have a custom 2.5" s/s decat downpipe mated to an inexpensive 2.5" Jetex non res half system , so only a back box , wot no drone ;)

[rob_coventry]

I will be decating at the same time, but I want to see if anyone else has done it and can offer me some advice

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[zollaf]

i did this on my 80, removed the rear box and had it straight through, so i know you get no extra power and it just makes a hell of a drone. soon put the rear box back on.

[Gazwould]

Thing is an 80 is a few generations behind , I'm comparing a 2003 with a 2003 .

[zollaf]

an engine is an engine and an exhaust is an exhaust. just because its 10 years newer doesn't mean its any different.

[rob_coventry]

This is the reason I want to make a bolt on piece, then if I don't like it I can just simply unbolt it and put it back to standard

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[Gazwould]

I had a Jetex resonated half system the oe 15kg center box was now a small side branch , totally quiet but for £42 they did a race pipe that cancelled it out , a more sporty sound for a derv , without the drone .

Some peeps have done decats staight throughs , no silencers , yuk , my cup of tea .

[rob_coventry]

How much was that? I want to spend as little as possible, which is why I'm looking into making one. A friend of mine has a straight pipe from front to back but its fat too loud and on a long journey it gets so annoying

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[Gazwould]

My Jetex half system was used (Passat 130 PD ) , but new around £315.

[rob_coventry]

Bit too pricey for me, il have to wait til I can get it up on my mates ramp to have a proper look and a measure up. Thanks for your help 👍

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[Gazwould]

Pricey http://www.ukpassats.co.uk/phpbb/images/smilies/icon_shysterical.gif

You won't ever buy a Miltek , BCS or Akrapvovic system then .

[rob_coventry]

I'm on a budget mate, haven't got the funds at the minute. And atleast if I make one and decide I don't like it, I haven't spent hundreds to take it back off.

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[Doctle Odd]

It would be sweet if you fitted a dump valve at the same time

[rob_coventry]

I'm guessing that's sarcasm?

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[Doctle Odd]

Sarcasm? Me? Never!

[Gazwould]

Dump valve , lol .

It's a vnt turbo , you should get a faint choo on lift off because there is no wadding in the boxes .

If on a budget a decat is around £57 or gut the existing and further surgery to the middle and back box to make them straight through . Ideally get rid of middle box .

VAG baffle set up .

http://i1310.photobucket.com/albums/s645/Gazwould/IMG_0378_zps48cf3c5e.jpg

http://i85.photobucket.com/albums/k57/karlthekarter/IMG_1486_zps84afa404.jpg


Convert like this .

http://tuningempire.eu/media/company_logo/slider_images/supersprint-exhaust-australia-tuning-empire%20(3).jpg

Or solid tubing for a bit more noise .