Alexander:

The standard settings for acceleration and deceleration delay are a value of 15, just keep in mind that while reducing the values to the default (I assume yours are higher based on your description), your engine may not work properly at them. Peak performance running engines have limitations on spool up/down speed, exagerated values used for the engine to run reliably could be indications of other problems like poor combustion or dying bearings. Also keep in mind that temperature also plays a role on acceleration performance, even if you set it up to spool fast, if the temperature nears the maximun allowed, the ECU will limit fuel flow to maintain temperature within limits, also reducing spool-up speed.

My advise would be to get a hold of someone running the same set-up, copy the values and see how the engine performs, if you have to make adjustments they should be minimal, if they are huge, I recommend you have the engine checked.