To remove the heat exhaust plume you can rename or move the file ‘FX_Heat_Exhaust.spd’ into another folder. I created another folder within that directory ‘FX Heat Exhaust Restore’ and moved it there. I’ve only tested this on the TBM 930 and I have no idea if moving this file will have unwanted effects on other parts of the simulation but it’s easily restored.
Drive?:\MSFS 2024\Microsoft Flight Simulator 2024\Content\Packages\fs-base-effects\VisualEffectLibs\Asobo\Base\FX_Heat_Exhaust.spd