Just came across this on a local Facebook group and I was pretty impressed. By adding a little length to two cylinders on the header these guys managed to make a i4 sound just like a Subaru/boxer engine.
Wondering what's possible, what the ramifications are of doing anything like this to our i6's?
Would a slightly LESS unequal length than what is pictured below translate to a v6 sound as opposed to the boxer sound?
Just curious. Food for thought!
Link to the video
https://www.facebook.com/groups/4626...6817866782479/