The hiss you are experiencing is from the booster being bad. time to replace. You will never get rid of that soft spongy feeling. sure it will stop and works but it will be very weak. Its losing vacuum. Its not whining its the hiss of air/vacuum leaking out. Replace the booster/hydroboost set up.
Yea but then you would have to rename the car the Prowler... the viper is a Viper because it is a BAMF not a car for the Yacht club guy to do stupid paddle shifts in traffic. My .02 of course. One of the last remaining man cars on the planet Earf
I think the usual issues are just Alternators and maybe the blower if not maintained (i.e Fluid flushed etc) but from what I have seen/owned they really do not break much especially his being Stock until 2k miles ago.
Going to be a while in my opinion. The 6r80 has been out since 2011 and it took a few years to get it to adapt to the GT500 and swaps, so I think it will be a while for the A10...