Front/rear delay is not possible, as the software cannot control the difference between the front/rear signals and this feature is not present in the DSP. The software could (in theory) globally change the left/right delay.............

I'm no expert by any means but if the EQ can change (in car) the four channels independantly of each other, it would seem to me, that delays or other effects could be accomplished. If a delay was added to each quadrant seperately (.5 sec delay-left/front....1.2 sec delay-right/rear) for example. Again I'm probably not understanding fully what the player can do.