I recently received the Gen 2 Signature Rear Exhaust from AAW. I thought of doing the install myself since the website state it should be "seamless." I took it to a local performance exhaust installer instead. GLAD I DID! Once he cut off the stock muffler, he noticed the stock pipe was 3" and the AAW was 2.5". Seamless? NO. I had to pay MUCH more than I had anticipated for a custom, welded, install. I purchased this exhaust to help decrease exhaust restriction, not increase it. How could this happen?
Yes, according to the website, this was supposed to fit an 2012 E9X 328i. Now, I do have the N51, but there was no distinction between N52 and N51 when I ordered.
Hmm, they must have changed the listing page since you've ordered it as it now says N52 6 times with no mention of the N51. If you have some proof that it was never differentiated when you ordered, maybe you can contact them and see if they will help you with your additional costs.
https://store.activeautowerke.com/pr...tive-autowerke
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