2.0 TDI exhaust

[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:

[GoLfMan]

The more you drive, the more fuel you use, the more tax you pay. If you drive something thirsty (V8 commodore), but only travel 5,000Km a year why should you pay as much tax as someone who drives the same vehicle 35,000Km a year.

Similarly someone who drives a 1.9 Polo 100,000Km a year is also using a lot of fuel (and creating a lot of pollution), even though their vehicle is very economical. Why should they only pay the same tax as granny who only drives 12,000Km a year ?

If the recent high fuel prices had continued, we would have seen a big shift towards saving fuel. Shorter, less frequent trips, less "pleasure" driving in the short term, and moves towards more fuel efficient vehicles in the long term.

Of course politicians being what they are, we'll probably get higher fuel taxes WITHOUT the reduction in rego and all the other govt charges

New Zealand has a system like this in place for diesel cars, you "buy miles" when you regester the car and you pay that fee every year. They only do that however because Diesel fuel over there isnt heavily taxed like ours and is cheap as a consequence.

i guess us Aussie diesel drivers just get the bill for the road milleage usage every time we hit up the pumps!

[CatonaPC©]

Aside from any issues about whether removing a muffler/resonator affects the ECU and in turn, driveability, the question one must ask, is any of this legal?

Probably not.

That nice big chrome exhaust outlet looks impressive but it's a sure fire way of attracting the attention of the p-o-l-i-c-e and jealous Civic drivers.

[Vicbitter]

Hey Gigitt, hows it feel now with the new exhaust.

[Gigitt]

I did it just over 2 years ago. Not pa problems with it.

Feels great. Enghine responds better. Car Pulls Harder and engine revs free'er.

Only problem now is I have to get a bigger turbo!

[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.

[Greg Roles]

Possibly a bit better response, but I would expect little from a simple muffler delete. I am of the opinion that the CRD does come with DPF, as ALL new VW diesels to most counties do from now on to meet the new forthcoming emission rules. If anything that's by far the biggest exhaust restriction, and not an easy thing to delete. Better to await a chip for your car if you want some more berries.

Looks like you have the typical VW huge pancake rear muff. I'd guess you have a resonator before the rear axle, in which case I'd be tempted to do a delete anyhow...what I'm planning for sure.

Shame you got ripped off at 2.25, my VW is 2.5 mandrel all the way baby!

[Vicbitter]

Funny thing is, i was reading the manual and no where does it state it's got a dpf!! Mentions cat converters but no particle filters......

I even called jeep, and on their systems there is no mention of dpf.
So it leads me to believe if it has no dpf, (gotta be a tdi then?) less restriction on a exhaust mod.
I guess i would have to wait till the warranty runs out to do it 3 yrs from now......