TDI Exhaust Modification Question

I have a 98' New Beetle TDI with close to 300,000km on it. It's running very well and I haven't had any problems with it. The engine is completely stock.
I am looking to modify the exhaust to bring out the sounds of the engine more.
In other words, I want to make it nice and loud.

Can somebody suggest what I might do to produce the best result?
I want the car to be louder, but I also want the sound to be crisp.
Is there something I can do to make the sound of the turbo more pronounced?

Is there any downside to modifying the stock exhaust system? Thanks!

Chop the muffler and put some pipe in its place. $20, 20 minutes...done.

Search mufflerectomy here and on Youtube.

TDICADDGUY said:

Chop the muffler and put some pipe in its place. $20, 20 minutes...done.

Search mufflerectomy here and on Youtube.

Click to expand...

But it still wont be loud.

heres how i did it (welder required and about $35 from auto zone



and heres what it looks like. pretty loud, but i have a "modified" downpipe.

just put a straight 2.5" on, not loud at all
just hear the turbo more

what about a straight 3" or is that too big??? how loud is a straight pipe on these tdi's??

Joester said:

and heres what it looks like.

Click to expand...

All that soot on the backside looks great.

Diesel_Benz said:

All that soot on the backside looks great.

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lol Yeah, TDI exhaust needs to point to the road, especially if you have nice white one...

scottie_boy99 said:

what about a straight 3" or is that too big??? how loud is a straight pipe on these tdi's??

Click to expand...

3" is what I would do - probably not much gains over 2.5" on a moderately modified car, but no point in doing it twice

The larger you go, the louder a straight pipe is. In stock exhaust size, a straight pipe is tolerable for day to day use. Some have minor drones depending on what you do for an exhaust tip, but it's really pretty decent sound wise and there's a nice turbo whistle.

Click on the link in my signature to hear a 4" straight pipe. Some YouTube searches will yield more videos of others TDI exhaust setups.

i kinda like the soot. beside i wash my car like every other day, i just kinda ignored it. my backside was sooty with the moffler on too. i htink it has something to do with how the air flows around the golf. and like you said it is white =)

Grap

h


Graph shows the differance in the pipe used for exhausts..The biggest increase is 3in over 2.5 ....showing 2.25 demed usless over 2.5 and pretty much 3in but only if your mods call for it...

anyone know of any good vendors in canada where i can get a good price on a straight pipe for an 04 jetta tdi sport

Check out the Euro Jet 3 inch thread by Far. I just installed that system and love it. Euro Jet sales staff blows but the products are good. Nothin like straight pipe diesel...

Beezman7 said:

Grap

h

Graph shows the differance in the pipe used for exhausts..The biggest increase is 3in over 2.5 ....showing 2.25 demed usless over 2.5 and pretty much 3in but only if your mods call for it...

Click to expand...

6 inch or go home then.. no but really. i did a mufflerectomy-cheap quick and easy..i can hear the turbo at idle and its got a deep but not annoying groan when driving