2.0 TDI exhaust

[dimsim]

Im thinking of modding the exhaust on my mk v. Has anyone done this ? I went to different exhaust shops and 1 said chuck the lot and replace it all with bigger pipes and muffler, the other said to leave it as is , it was all ok because the rear muffler has no baffles in it. Any advice welcome. Thanks.

[Greg Roles]

I'm "about" to do the same thing, but I've been saying that for several weeks now ( lack of play time! ). The stock pipe is mandrel bent at 2.5" and it would flow pretty well. Then again you can never oversize a turbo exhaust. Thing is the MAJOR restriction is right next to the turbo, the DPF particulate filter. Upping the pipe size and leaving that in place is a waste of time and money really.

Nearly all the aftermarket "cat" (DPF ) back exhausts available delete the huge rear pancake muff. I am going to do that for sheer weight savings alone! I'd consider replacing the rear axle area resonator if it turns out to be restrictive, with a nice flowing Jap one, but I'd hazzard a guess that's not going to be necessary.

My vote would be cutout the big rear one, as it'll be cheap and quite easy for a shop to do, and see if the car feels any better. Go from there!

[Mischa]

greg his car doesnt have a DPF that lucky bugger

[dimsim]

On my wish list is a larger free flow cat, I would keep the resonator and do something with the rear muf(if it is as restrictive as some people say) . I need the car to be quiet as my wife drives the car now with bubs in the back and she who must be obeyed will not stand for a loud exhaust.

[gldgti]

i wouldnt be scared about making it loud - the turbocharger is the worlds most expensive muffler.

my 1.9TD has mandrel 2.5" all the way from the turbo with resonator and a small straight through perf rear box, and its DEAD quiet. quieter than stock i reckon. turbo outlet is so small it just kills all the noise.

[Greg Roles]

I've been told the diesel with no muffs etc is quite reasonable.
Personally to avoid the drone, keep a resonator at least!

[Vicbitter]

greg his car doesnt have a DPF that lucky bugger

i have the 103kw with apparently with no dpf (i read in the dpf thread)

so....i could put an aftermarket muffler on it relatively easy with no major probs?

[Greg Roles]

Absolutely VB, you could do a full turbo back exhaust if you really wanted to.

[Vicbitter]

I haven't measured it yet but i think i got the 2.25" piping.
I really wanna get rid of the stock muffler and attach something better!
Would i really get much of a gain in anything? other than looks.

[Gigitt]

I'm "about" to do the same thing, but I've been saying that for several weeks now ( lack of play time! ). The stock pipe is mandrel bent at 2.5" and it would flow pretty well. Then again you can never oversize a turbo exhaust. Thing is the MAJOR restriction is right next to the turbo, the DPF particulate filter. Upping the pipe size and leaving that in place is a waste of time and money really.

Nearly all the aftermarket "cat" (DPF ) back exhausts available delete the huge rear pancake muff. I am going to do that for sheer weight savings alone! I'd consider replacing the rear axle area resonator if it turns out to be restrictive, with a nice flowing Jap one, but I'd hazzard a guess that's not going to be necessary.

My vote would be cutout the big rear one, as it'll be cheap and quite easy for a shop to do, and see if the car feels any better. Go from there!

Do it!

It's called a Mufflerectomy.

I did it to my Mk3 TDI back in Oct 2006 the night before Drag Warz.

Sound is Tough and not loud by Milo tin standards.

My TDI now rev's quicker and easier.

2.5in Stainless Mufflerectomy: