Gave the spare exhaust a quick lazy polish before bolting it up and dropping the car off at the shop.
Even on the way there I still hadn't fully decided on the final course of action - whether to cut out the resonator or the secondary cats. Sound wise both would probably have had the same effect but the smelliness of it all was my main concern. Had the guys at the shop start up a couple of decatted cars to get a sense of what life would be like cat-free. Don't know if I got an objective feel for it or if my sense of smell had simply been decimated from sniffing all the brake cleaner fumes over the years but it didn't feel as bad as I had feared so cat delete it was.
Somehow turned out to be a bit more work than I thought it would be, they cut out a bigger section than I'd envisaged but the end result looked really nice, the welds were tidy and the sound exactly what I was after.
This was a progress photo they'd sent through, I forgot to ask for a full underside photo at the end. I'll be taking the exhaust off shortly to fit new exhaust gaskets, refit the damper at the back of the resonator and finish off the polishing mission so will take a photo of the rear section then.
Loving the end result, the purr at startup is awesome, has a nice deeper tone to it throughout with a tinge of the signature BMW rasp. Loud enough to be enjoyable but not loud enough to be obnoxious so shouldn't annoy the neighbours too much. Once warmed up it's still surprisingly quiet at idle but definitely feel a bit more kick when giving it some beans. Took it onto the motorway to see if there's any droning but all good on that front too. The smell isn't nearly as bad as I'd feared as well, probably would only ever be an issue if left idling inside the garage for a while.
VIDEO: Cold Start
VIDEO: dB Meter Test
VIDEO: Before Comparison with the 325i Exhaust
Took it out for a quick bash along the hills the other weekend with @Carbon and his Honda mates, as well as a certain infamous M5. The muffler-deleted V8 and well as my newly opened up exhaust reverberating off the surrounding hills was a bloody nice soundtrack.
Have now clocked up a couple hundred km's on the new exhaust setup and couldn't be happier, a nice finishing touch. Quickly running out of things to improve on this car. Thanks again to @Gaz for the hookup.
Wifey called me a bogan as I pulled up into the driveway so that's the mission well and truly accomplished.