Originally Posted by WhiteFury
I just got my DME updated at the dealership, and my exhaust got quieter. Yesterday I had my secondary cats cut off and I love the way it sounds, now it sounds like crap.
I do I fix this, or get rid of this update?
Also idle isn't as smooth and my sputter has returned.
I am providing pictures of my update to see what software version I have and if you guys can tell me anything about it.
ISTA/P version - 50.4.002
Integration level - E89X-13-07-503
I'd bring the issue up with your dealer.
They will not be unable to remove the software update, their systems don't allow anything like that. You'd have to find a aftermarket coder to reflash the DME with the original software.