To be clear, for a lease:
Adding the performance exhaust kit (as an example) at the VPC is a cost of $1335. Maybe one negotiates closer to invoice but let's say its $1335 paid for this argument.
MSRP goes up $1335. Capitalized cost increases by amount paid ($1335 or discounted price). But residual only goes up by $250, right? (i.e. about 19% residual value for the part.)
Its better than zero but these still seem like pretty hard hits on the depreciation (and therefore make more sense for purchases).
We've always been told mods don't add much value so I suppose it makes sense. Its tough though when adding factory packages that retain at the same residual rate as vehicle.
Please correct me if I am wrong! And THANK YOU for posting this, really great job.