Is a down pipe with no tune damaging?

[Naked Driver]

I have a 15’ A3 and I’m thinking of getting a CTS downpipe, I know it’ll throw a CEL, but with it be damaging to the engine if I run it without a tune?? Currently have a Remus catback exhaust with a resonator delete, but I still want some extra sound


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[o1turbo30v]

No damage but no real gain without a tune except noise and annoyance at seeing a CEL on everytime you drive it

[CronicPAIN]

I have a 15’ A3 and I’m thinking of getting a CTS downpipe, I know it’ll throw a CEL, but with it be damaging to the engine if I run it without a tune?? Currently have a Remus catback exhaust with a resonator delete, but I still want some extra sound


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I ran my Audi with unitronic downpipe and not tune for around 4 months it was not fun at all its not worth it just saved money and get a tune or just put a Catback

Audi A3 2015 Unitronic Stage 2

[CronicPAIN]

Here my Audi with a turbo back no tune

https://youtu.be/vhoXAKORtvI

And here is its with the same turbo-back with stage 2 tune

https://youtu.be/Wqq3qeTyl1M

It's a huge difference

Audi A3 2015 Unitronic Stage 2

[Naked Driver]

Oh wow that is a huge difference lol. Yeah I think I’ll save up for a stage 2. Thanks for the help


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[aaronc7]

Tune is biggest gain. You can run downpipe on stock tune no problem, but like already mentioned you could get a check engine light saying the cat isn't doing its job. If your long term plan is Stage 2, and want to split the cost out over time.... do the hardware first so you don't have to upgrade or whatever your tune later and waste money.

[MikTip]

Find a down pipe that has a cat-converter that passes emissions. No problem.