Ive heard of people doing it on the older 3.0L model but what about the 2.0L ? What are the performance gains like ? and are there any complications ?
I had a small look under my car and its already quite a large diameter pipe, already looks like an after-market 304 stainless system (ive been told its actually made by Ferrita Exhausts). I could not get a good look at the downpipe since its all covered up but its definitely a catted system since its still factory. Reading the specs says its a "3 inch down pipe with a high flow cat".
So the question is...is it worth changing it out ? Obviously im only interested in performance since the 2.0L isnt really an exotic sounding car.
Concerns would be check engine lights (of course id use cat foolers / mini cats) since nobody i know has any knowledge of changing a DP on a drive-e engine.
Currently my suspicion is that there isn't that much potential since it seems Polestar already put a lot of thought into this system, however theres still a cat in there and usually as they get older they flow worse due to to carbon buildup. Another factor may be that the engine might not scale back the power as much since the cat fooler will always be reporting favorable values....though i have seen cat foolers cause issues in non remapped cars where they cause the engine to run lean.
Its quite a highly stressed engine so im not sure if changing it is as safe as it would be in other cars ive had (such as the 2.5L T5s).