DBF1 Stage 1 Includes two files 93 Oct and E50 any other hardware upgrade in the future will be an extra fee of $500 for the revision. Each car will be tuned remotely and will require 5-10 revisions the pend on the car modification and the health of the engine. 
With a custom stage 1 tune, we highly recommend replacing all spark plugs before the tune and gap to 0.022”, replace the new cold air intake filter and fresh engine oil. There are basic steps for the car to be ready for custom calibration 
Stage 2/3/4 Contact for the pricing