JCW exhaust package on S all4

Swapping a JCW exhaust onto an S All4 is definitely doable, but don’t expect a massive performance gain. The biggest improvement will be in sound, giving you a deeper tone and some subtle pops and burbles, though it won’t be as aggressive as a full JCW setup since your engine tuning isn’t the same. Some minor fitment tweaks might be necessary, but it generally bolts up fine. The ECU might not fully adjust to the new exhaust flow unless you get a tune, so the benefits beyond sound might be limited. If you're looking for something with a real performance boost, you might be better off with a full aftermarket system rather than just going with the JCW package.
 

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