MTM turns up the wick on the 2010 Audi S4

[Marv]

Slightly off topic, MTM or other tuning and those of you who have bought it: do you worry about durability and resale value? I am asking because I once had a MTM re-mapped S3 and while I really loved it, it was sadly not exactly an advantage when I finally sold it.

I've never had a durability problem with MTM - they are pretty thoughtful about how they tune without overdoing it. They also have a strong links with Audi. Then again I've never gone beyond a stage 1 software tune. New intake, exhaust, fuel, turbo, nitrous etc is a whole different game.

With regard resale, the new MTM cantronic tune uses a dongle that plugs in over the ECU. You can simply take it off and the car reverts to normal behaviour. If you happen to buy another Audi then MTM can just reprogram the dongle and you can plug it into the next one.