a5 3.0L dpf delete and miltek

just had the quad miltek exhaust cat back fitted and wanting abit more noise from the exhaust. Its sounds alittle bit different but not much. Ive herd that a dpf delete will help with that has any1 had it done with the miltek ? Also thinking about the stage 2 remap, the guy who did my stage 1 says he will do dpf delete and stage 2 map for £400.