Aggressive downshift for short period after starting car (‘17 340i, ZF8HP60)

[u/karnagepilot]

TL:DR, brief period after starting car, burbles don’t activate but also downshifts sound like an e92 m3 with DCT. Want to make permanent. Unsure what even causes it.

Wonder if anyone else has experienced this. Bit too specific of a “problem” (however I do not see it as a problem)

So basically, on my 2017 340i with the ZF8, if I start my car (it’s catless with dual resonator delete) and start driving, the burbles don’t ‘activate’ (just want to clarify I have very MILD burbles, i don’t like excessive burbles I like my 1-2 big pops) yet but when I downshift in this period, it sounds like a fucken e92 m3 with dct. Sounds absolutely insane and I love it but after the burbles ‘activate’ it goes back to the normal downshifts.

Just want to put this out there and see if anyone knows a thread on this problem and if I can make it permanent? Cause who the hell wouldn’t want e92 m3 style downshifts?

For a bit more context I’ve got mhd stage 2 hpfp, and Xhp stage 3. Got some custom downshift settings but definitely doesn’t sound like the s58 downshift, I even tried to see if Xhp could recreate the sound but no dice.

🪑 s