When shifting though, it is programmed to drop and hold about 500rpm on an up shift, regardless of current rpm. Is it doing that? If not, then you are correct, and there may an issue with rev match programming. That would likely be fixed with re-flashing the software (assuming the shifter and rpm data sensors are working properly)Nobody is talking about luxury level seamlessness. But when one car is lunging forward rather violently, and another does not (under the same conditions) what does that tell you? I drove plenty other S550's and none of them exhibited such behaviour.
It's not dropping and holding - it's literally just holding RPM then the whole car drops. Example:it is programmed to drop and hold about 500rpm on an up shift, regardless of current rpm.
You know what, maybe you're onto something. I completely forgot that this is even a thing and I'm not keen on testing it either *cough* shift forks *cough*Isn't this a sign of the automatic no lift shift that the new PCMs do now where it keeps the throttle open when shifting over 5k?
I know ever since I got the PP2 tune on my 16GT that enables no lift shift at >85% throttle and >5000rpm doing the shift normally is a little funky as my timing interferes slightly with the NLS feature. I either have to do it very fast, or just let the computer do it's own thing. But if I try to do a semi-lazy shift past 5000rpm now it lunges a bit.