ABT Power S Tune - Stage 2 Downpipe??

[georgekappa]

Hey guys, first post here, searched around and couldn't find a clear answer.

I bought my Mk7 2015 R a few months ago and it already has a ABT Power S tune installed.

I'm looking at upgrading the exhaust to a upgraded downpipe + catback and am wondering what the process is for retuning it? Or do I not need to because it is a piggy back system?

Any help appreciated.

Thank you!

[h100vw]

Will likely throw a cel for the high flow cat. But check that out first.

[Lucas_R]

You might get away with an o2 sensor spacer to avoid the CEL. If not, the ABT module might be able to be tweaked to allow for the downpipe? Im not familiar with the ABT module but if its in any way similar to the Burger Motorsports module then it can be adjusted for different mods up to a certain level.

[georgekappa]

So what exactly does the stage 2 tune change when people do it? Is it just to allow for the upgraded dp without throwing cel or is there more to it?