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Originally Posted by ABM1SSSG3
Quote: The shudder is gone completely which is awesome but i am noticing the RPMs are idling a bit higher around 1800-2000 rpm in 8th at 65-70 vs 1500ish prior to the TSB.
Quote:Other than that I am noting the exhaust isn't as loud as it used to be (can barely hear the crackles/pops even in track mode - although this could be my imagination). I am wondering if they did any tuning updates along with just the mobil 1 fluid swap?
Seems like the converter may not be locking up, at least in 8th gear. Can't think of anything that may be causing the difference in exhaust note.
Drive the 200miles(or however many miles they told you to drive it). It may be just a relearn issue. If it doesn't change to your liking, take it back in, and voice your concerns.
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One thing I was noting yesterday - the tach was stuttering back and forth at normal highway speeds on flat roads - found it interesting but no weird vibrations etc when driving. Like you said I'll drive it 200 mi and see how it feels.