I've been trying to fix up my MAF and VVE after my mods on my 13 ZL1 A6 and it's going great and i am learning fast as i go but i'm experiencing a few issues, this has been discussed on here before but everyone was distracted by a fueling issue and i have fixed it by installing an aux pump so my Fuel pressure status stays happy, and i am not entirely sure if this is Trans related or not so excuse me for that.
So the issue is that when i am off throttle and i try to downshift, the car starts to stutter violently and some times it does produce a poping sound from the exhaust so i let off every time it happens, this doesn't necessarily happen every time i down shift and every time i am off throttle but it does it 90% of the time and it seems to continue for a few seconds if i don't let off.
I've checked if its knock and disabled all burst knock from the tune with no success, but before it was disabled burst knock was present and it would go up to 6 degrees, but after disabling burst knock it still acts up the same way and there is ZERO KR as you'll see in the log.
Another issue is that the trans keeps shifting waaay too early even at extreme partial throttle while cruising or taking off from a stop, it just jumps to the next gear as soon as it is able to, keep in mind i haven't touched the trans settings at all yet.
Mods:
-CIA
-Catless 2" Headers
-Stock Ported TB
-Ported snout and blower
-Afco HX
-2.55 upper pulley
-DW 90lb Injectors (I have put in the correct data, or at least i think i did)
-DSX aux pump
trans issue.hpl downshifting at 45 seconds, I've purposely logged all downshifts
VVE ZL1 2.hpt Tune is set up for adjusting VVE, does the same thing even when not on VVE adjustment tune.
Stock file.hpt 100% stock ZL1 tune for comparison purposes.