Cupra tdi Mufflerectomy

Thought i would make a thread about this as it was what i was looking for but couldnt find.
i did watch thor racing's video etc.

Saturday i had the silencer cut out my cupra, tips welded back on, so you wouldnt notice.

i was worried it might make it sound shite and not do alot but i was very impressed!

First off the silencer weighs a tonne!
The noise is basically unnoticeable on idle just sounds airy.
But when you drive it it sounds awesome! still quiet, the only noise is the spool up and chatter.
You instantly notice the extra power, pulls better and spools up quicker, and you get a lovely chatter noise when you let off, that you cant help but love.

i would definitely recommend this to any tdi owner, best cost effective mod ive done at only £50! better sound and better power.

On the other hand i drilled the air box and made a bigger cold air feed to run with my pipercross filter and tbh it sounds awful! sounds like a chavs corsa with a k&n filter on it.

so will be getting a fresh one and just running a bigger cold air feed and not drilling it!
Just a warning to anyone thinking of doing it.

Hope this helps

Does anyone have a standard air box they want to sell me? just the bottom section preferably...

i cant see why not, its not loud so wont fail there, doesnt smoke etc any more than usual and i still have a cat in, although you dont need it.

i got an audi a3 air box on ebay, pretty much the same, only needed the bottom section, its a bit smoother inside compared to the seat one, so just used that with a larger cold air feed, works fine.

but the cat isnt a muffler? read thor racings thread for more details
and i thought running a straight through on a turbo diesel wasnt a great idea due to back pressure?

so you had it straight through? how was it? noise, gains etc? ive only had petrols in the past and diesels seem like a whole new ball game. i was going to get mine the same as yours but the hole put me off lol nice car though bud

john_tdi said:

It is louder but only when booting it. Also the odd pigeon sound on lift off is more pronounced

Click to expand...

are you talking about the cat here? i love the pigeon sound haha ive had a supercharger had vtec but never a turbo.

So if i removed my cat as well as my non existent back box it would free up the flow, not really effect noise apart from booting it and increase the screaming pigeon? me likey

i plan on getting it remapped after the shitty weather has passed as well.

nice stuff!
you would of thought that a miltek silencer would make it quieter than a straight pipe lol weird.
might have to do this. only thing is every car ive owned has been loud and neighbors hate me, and i swore id keep this one quiet! need to look at vids i think.
cheers for ya help